CVE-2017-6738 (GCVE-0-2017-6738)
Vulnerability from cvelistv5 – Published: 2017-07-17 21:00 – Updated: 2025-10-21 23:55Summary
The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these vulnerabilities by sending a crafted SNMP packet to an affected system via IPv4 or IPv6. Only traffic directed to an affected system can be used to exploit these vulnerabilities.
The vulnerabilities are due to a buffer overflow condition in the SNMP subsystem of the affected software. The vulnerabilities affect all versions of SNMP - Versions 1, 2c, and 3. To exploit these vulnerabilities via SNMP Version 2c or earlier, the attacker must know the SNMP read-only community string for the affected system. To exploit these vulnerabilities via SNMP Version 3, the attacker must have user credentials for the affected system. A successful exploit could allow the attacker to execute arbitrary code and obtain full control of the affected system or cause the affected system to reload.
Customers are advised to apply the workaround as contained in the Workarounds section below. Fixed software information is available via the Cisco IOS Software Checker. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable.
There are workarounds that address these vulnerabilities.
Severity
8.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-08 17:36 UTC
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/c… | |
| http://www.securityfocus.com/bid/99345 | vdb-entryx_refsource_BIDx_transferred |
| http://www.securitytracker.com/id/1038808 | vdb-entryx_refsource_SECTRACKx_transferred |
| https://tools.cisco.com/security/center/content/C… | x_refsource_CONFIRMx_transferred |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | IOS |
Affected:
12.2(53)SE1
Affected: 12.2(55)SE Affected: 12.2(50)SE2 Affected: 12.2(50)SE1 Affected: 12.2(50)SE5 Affected: 12.2(53)SE Affected: 12.2(55)SE3 Affected: 12.2(55)SE2 Affected: 12.2(52)SE Affected: 12.2(58)SE Affected: 12.2(50)SE3 Affected: 12.2(55)SE1 Affected: 12.2(53)SE2 Affected: 12.2(52)SE1 Affected: 12.2(54)SE Affected: 12.2(50)SE4 Affected: 12.2(50)SE Affected: 12.2(58)SE1 Affected: 12.2(55)SE4 Affected: 12.2(58)SE2 Affected: 12.2(55)SE5 Affected: 12.2(55)SE6 Affected: 12.2(55)SE7 Affected: 12.2(55)SE8 Affected: 12.2(55)SE9 Affected: 12.2(55)SE10 Affected: 12.2(55)SE11 Affected: 12.2(53)EX Affected: 12.2(52)EX Affected: 12.2(55)EX Affected: 12.2(52)EX1 Affected: 12.2(55)EX1 Affected: 12.2(55)EX2 Affected: 12.2(55)EX3 Affected: 12.2(58)EX Affected: 12.2(55)EY Affected: 12.2(52)EY1 Affected: 12.2(52)EY Affected: 12.2(53)EY Affected: 12.2(52)EY2 Affected: 12.2(52)EY1b Affected: 12.2(52)EY1c Affected: 12.2(58)EY Affected: 12.2(52)EY3 Affected: 12.2(52)EY2a Affected: 12.2(58)EY1 Affected: 12.2(52)EY4 Affected: 12.2(52)EY3a Affected: 12.2(58)EY2 Affected: 12.2(58)EZ Affected: 12.2(53)EZ Affected: 12.2(55)EZ Affected: 12.2(60)EZ Affected: 12.2(60)EZ1 Affected: 12.2(60)EZ2 Affected: 12.2(60)EZ3 Affected: 12.2(60)EZ4 Affected: 12.2(60)EZ5 Affected: 12.2(60)EZ6 Affected: 12.2(60)EZ7 Affected: 12.2(60)EZ8 Affected: 12.2(60)EZ9 Affected: 12.2(60)EZ10 Affected: 12.2(60)EZ11 Affected: 12.2(50)SG3 Affected: 12.2(53)SG Affected: 12.2(50)SG6 Affected: 12.2(53)SG1 Affected: 12.2(53)SG2 Affected: 12.2(50)SG5 Affected: 12.2(53)SG3 Affected: 12.2(50)SG8 Affected: 12.2(50)SG2 Affected: 12.2(54)SG1 Affected: 12.2(50)SG1 Affected: 12.2(52)SG Affected: 12.2(54)SG Affected: 12.2(50)SG Affected: 12.2(50)SG7 Affected: 12.2(53)SG4 Affected: 12.2(50)SG4 Affected: 12.2(53)SG5 Affected: 12.2(53)SG6 Affected: 12.2(53)SG7 Affected: 12.2(53)SG8 Affected: 12.2(53)SG9 Affected: 12.2(53)SG10 Affected: 12.2(53)SG11 Affected: 12.2(33)SXI Affected: 12.2(33)SXI1 Affected: 12.2(52)XO Affected: 12.2(54)XO Affected: 12.2(50)SQ2 Affected: 12.2(50)SQ1 Affected: 12.2(50)SQ Affected: 12.2(50)SQ3 Affected: 12.2(50)SQ4 Affected: 12.2(50)SQ5 Affected: 12.2(50)SQ6 Affected: 12.2(50)SQ7 Affected: 15.0(1)XO1 Affected: 15.0(1)XO Affected: 15.0(2)XO Affected: 15.3(1)T Affected: 15.3(2)T Affected: 15.3(1)T1 Affected: 15.3(1)T2 Affected: 15.3(1)T3 Affected: 15.3(1)T4 Affected: 15.3(2)T1 Affected: 15.3(2)T2 Affected: 15.3(2)T3 Affected: 15.3(2)T4 Affected: 15.0(1)EY Affected: 15.0(1)EY1 Affected: 15.0(1)EY2 Affected: 15.0(2)EY Affected: 15.0(2)EY1 Affected: 15.0(2)EY2 Affected: 15.0(2)EY3 Affected: 12.2(54)WO Affected: 15.0(1)SE Affected: 15.0(2)SE Affected: 15.0(1)SE1 Affected: 15.0(1)SE2 Affected: 15.0(1)SE3 Affected: 15.0(2)SE1 Affected: 15.0(2)SE2 Affected: 15.0(2)SE3 Affected: 15.0(2)SE4 Affected: 15.0(2)SE5 Affected: 15.0(2)SE6 Affected: 15.0(2)SE7 Affected: 15.0(2)SE8 Affected: 15.0(2)SE9 Affected: 15.0(2)SE10 Affected: 15.0(2)SE10a Affected: 15.1(1)SG Affected: 15.1(2)SG Affected: 15.1(1)SG1 Affected: 15.1(1)SG2 Affected: 15.1(2)SG1 Affected: 15.1(2)SG2 Affected: 15.1(2)SG3 Affected: 15.1(2)SG4 Affected: 15.1(2)SG5 Affected: 15.1(2)SG6 Affected: 15.1(2)SG7 Affected: 15.1(2)SG8 Affected: 15.2(4)M Affected: 15.2(4)M1 Affected: 15.2(4)M2 Affected: 15.2(4)M4 Affected: 15.2(4)M3 Affected: 15.2(4)M5 Affected: 15.2(4)M8 Affected: 15.2(4)M10 Affected: 15.2(4)M7 Affected: 15.2(4)M6 Affected: 15.2(4)M9 Affected: 15.2(4)M6a Affected: 15.2(4)M11 Affected: 15.0(2)SG Affected: 15.0(2)SG1 Affected: 15.0(2)SG2 Affected: 15.0(2)SG3 Affected: 15.0(2)SG4 Affected: 15.0(2)SG5 Affected: 15.0(2)SG6 Affected: 15.0(2)SG7 Affected: 15.0(2)SG8 Affected: 15.0(2)SG9 Affected: 15.0(2)SG10 Affected: 15.0(2)SG11 Affected: 15.0(2)SG11a Affected: 15.0(1)EX Affected: 15.0(2)EX Affected: 15.0(2)EX1 Affected: 15.0(2)EX2 Affected: 15.0(2)EX3 Affected: 15.0(2)EX4 Affected: 15.0(2)EX5 Affected: 15.0(2)EX8 Affected: 15.0(2a)EX5 Affected: 15.0(2)EX10 Affected: 15.0(2)EX11 Affected: 15.0(2)EX13 Affected: 15.0(2)EX12 Affected: 15.2(2)GC Affected: 15.2(3)GC Affected: 15.2(3)GC1 Affected: 15.2(4)GC Affected: 15.2(4)GC2 Affected: 15.2(4)GC3 Affected: 15.4(1)T Affected: 15.4(2)T Affected: 15.4(1)T2 Affected: 15.4(1)T1 Affected: 15.4(1)T3 Affected: 15.4(2)T1 Affected: 15.4(2)T3 Affected: 15.4(2)T2 Affected: 15.4(1)T4 Affected: 15.4(2)T4 Affected: 15.0(2)EA Affected: 15.0(2)EA1 Affected: 15.2(1)E Affected: 15.2(2)E Affected: 15.2(1)E1 Affected: 15.2(3)E Affected: 15.2(1)E2 Affected: 15.2(1)E3 Affected: 15.2(2)E1 Affected: 15.2(4)E Affected: 15.2(3)E1 Affected: 15.2(2)E2 Affected: 15.2(2a)E1 Affected: 15.2(2)E3 Affected: 15.2(2a)E2 Affected: 15.2(3)E2 Affected: 15.2(3a)E Affected: 15.2(3)E3 Affected: 15.2(4)E1 Affected: 15.2(2)E4 Affected: 15.2(2)E5 Affected: 15.2(4)E2 Affected: 15.2(3)E4 Affected: 15.2(5)E Affected: 15.2(4)E3 Affected: 15.2(2)E6 Affected: 15.2(5a)E Affected: 15.2(5)E1 Affected: 15.2(5b)E Affected: 15.2(2)E5a Affected: 15.2(5c)E Affected: 15.2(2)E5b Affected: 15.2(5a)E1 Affected: 15.2(4)E4 Affected: 15.2(5)E2 Affected: 15.3(3)M Affected: 15.3(3)M1 Affected: 15.3(3)M2 Affected: 15.3(3)M3 Affected: 15.3(3)M5 Affected: 15.3(3)M4 Affected: 15.3(3)M6 Affected: 15.3(3)M7 Affected: 15.3(3)M8 Affected: 15.3(3)M9 Affected: 15.3(3)M8a Affected: 15.2(4)JN Affected: 15.0(2)EZ Affected: 15.2(1)EY Affected: 15.0(2)EJ Affected: 15.0(2)EJ1 Affected: 15.2(1)SY Affected: 15.2(1)SY1 Affected: 15.2(1)SY0a Affected: 15.2(1)SY2 Affected: 15.2(2)SY Affected: 15.2(1)SY1a Affected: 15.2(2)SY1 Affected: 15.2(2)SY2 Affected: 15.2(1)SY3 Affected: 15.2(1)SY4 Affected: 15.2(5)EX Affected: 15.2(4)JAZ1 Affected: 15.0(2)EK Affected: 15.0(2)EK1 Affected: 15.4(1)CG Affected: 15.4(1)CG1 Affected: 15.4(2)CG Affected: 15.2(2)EB Affected: 15.2(2)EB1 Affected: 15.2(2)EB2 Affected: 15.5(1)T Affected: 15.5(1)T1 Affected: 15.5(2)T Affected: 15.5(1)T2 Affected: 15.5(1)T3 Affected: 15.5(2)T1 Affected: 15.5(2)T2 Affected: 15.5(2)T3 Affected: 15.5(2)T4 Affected: 15.5(1)T4 Affected: 15.2(2)EA Affected: 15.2(2)EA1 Affected: 15.2(2)EA2 Affected: 15.2(3)EA Affected: 15.2(4)EA Affected: 15.2(4)EA1 Affected: 15.2(2)EA3 Affected: 15.2(4)EA3 Affected: 15.2(5)EA Affected: 15.2(4)EA4 Affected: 15.2(4)EA5 Affected: 15.5(3)M Affected: 15.5(3)M1 Affected: 15.5(3)M0a Affected: 15.5(3)M2 Affected: 15.5(3)M3 Affected: 15.5(3)M4 Affected: 15.5(3)M4a Affected: 15.5(3)M5 Affected: 15.3(3)JAA1 Affected: 15.0(2)SQD Affected: 15.0(2)SQD1 Affected: 15.0(2)SQD2 Affected: 15.0(2)SQD3 Affected: 15.0(2)SQD4 Affected: 15.0(2)SQD5 Affected: 15.0(2)SQD6 Affected: 15.6(1)T Affected: 15.6(2)T Affected: 15.6(1)T0a Affected: 15.6(1)T1 Affected: 15.6(2)T1 Affected: 15.6(1)T2 Affected: 15.6(2)T2 Affected: 15.6(1)T3 Affected: 15.3(1)SY Affected: 15.3(1)SY1 Affected: 15.3(1)SY2 Affected: 15.6(3)M Affected: 15.6(3)M1 Affected: 15.6(3)M0a Affected: 15.6(3)M1b Affected: 15.6(3)M2 Affected: 15.6(3)M2a Affected: 15.2(4)EC1 Affected: 15.2(4)EC2 Affected: 15.3(3)JPC5 Affected: 15.4(1)SY Affected: 15.4(1)SY1 Affected: 15.4(1)SY2 Affected: 15.5(1)SY Affected: 15.3(3)JPR1 |
|
| Cisco | Cisco IOS XE Software |
Affected:
3.2.0SG
Affected: 3.2.1SG Affected: 3.2.2SG Affected: 3.2.3SG Affected: 3.2.4SG Affected: 3.2.5SG Affected: 3.2.6SG Affected: 3.2.7SG Affected: 3.2.8SG Affected: 3.2.9SG Affected: 3.2.10SG Affected: 3.2.11SG Affected: 3.3.0SG Affected: 3.3.2SG Affected: 3.3.1SG Affected: 3.2.0SE Affected: 3.2.1SE Affected: 3.2.2SE Affected: 3.2.3SE Affected: 3.3.0SE Affected: 3.3.1SE Affected: 3.3.2SE Affected: 3.3.3SE Affected: 3.3.4SE Affected: 3.3.5SE Affected: 3.4.0SG Affected: 3.4.2SG Affected: 3.4.1SG Affected: 3.4.3SG Affected: 3.4.4SG Affected: 3.4.5SG Affected: 3.4.6SG Affected: 3.4.7SG Affected: 3.4.8SG Affected: 3.5.0E Affected: 3.5.1E Affected: 3.5.2E Affected: 3.5.3E Affected: 3.6.0E Affected: 3.6.1E Affected: 3.6.2aE Affected: 3.6.2E Affected: 3.6.3E Affected: 3.6.4E Affected: 3.6.5E Affected: 3.6.6E Affected: 3.6.5aE Affected: 3.6.5bE Affected: 3.3.0SQ Affected: 3.3.1SQ Affected: 3.4.0SQ Affected: 3.4.1SQ Affected: 3.7.0E Affected: 3.7.1E Affected: 3.7.2E Affected: 3.7.3E Affected: 3.7.4E Affected: 3.7.5E Affected: 3.5.0SQ Affected: 3.5.1SQ Affected: 3.5.2SQ Affected: 3.5.3SQ Affected: 3.5.4SQ Affected: 3.5.5SQ Affected: 3.5.6SQ Affected: 16.1.1 Affected: 16.1.2 Affected: 16.1.3 Affected: 16.2.1 Affected: 16.2.2 Affected: 3.8.0E Affected: 3.8.1E Affected: 3.8.2E Affected: 3.8.3E Affected: 3.8.4E Affected: 16.3.1 Affected: 16.3.2 Affected: 16.3.3 Affected: 16.3.1a Affected: 16.3.4 Affected: 16.4.1 Affected: 16.4.2 Affected: 16.5.1 Affected: 16.5.1a Affected: 16.5.1b Affected: 3.18.1aSP Affected: 3.18.2aSP Affected: 3.9.0E Affected: 3.9.1E Affected: 3.9.2E Affected: 17.11.99SW |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 3bececda-3ab1-4a4e-85e4-4a9a1aa68a5c
Exploited: Yes
Timestamps
First Seen: 2022-03-03
Asserted: 2022-03-03
Scope
Notes: Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability | Affected: Cisco / IOS and IOS XE Software | Description: The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code. | Required action: Apply updates per vendor instructions. | Due date: 2022-03-24 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2017-6738
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-119 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | IOS and IOS XE Software |
| Due Date | 2022-03-24 |
| Date Added | 2022-03-03 |
| Vendorproject | Cisco |
| Vulnerabilityname | Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-10-02 08:10 CEST
| Updated: 2026-10-02 08:10 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 85e407dd-44f0-4afa-b8d8-08e2a06f2691
Exploited: Yes
Timestamps
First Seen: 2022-03-03
Asserted: 2022-03-03
Scope
Notes: The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an... | Affected: Cisco / IOS, Cisco IOS XE Software | CVSS: 8.8 (HIGH) | EPSS: 0.10855 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an... |
| Cve Id | CVE-2017-6738 |
| Vendor | Cisco |
| Ghsa Id | None |
| Product | IOS, Cisco IOS XE Software |
| Added Date | 2022-03-03T00:00:00.000Z |
| Cvss Score | 8.8 |
| Epss Score | 0.10855 |
| Previous Ids | |
| Cvss Severity | HIGH |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.95731 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2017-6738 |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-10-02 09:10 CEST
| Updated: 2026-10-02 09:10 CEST
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{
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{
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{
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{
"status": "affected",
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}
]
},
{
"product": "Cisco IOS XE Software",
"vendor": "Cisco",
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{
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{
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{
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{
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{
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
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{
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},
{
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{
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{
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{
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{
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},
{
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "16.1.2"
},
{
"status": "affected",
"version": "16.1.3"
},
{
"status": "affected",
"version": "16.2.1"
},
{
"status": "affected",
"version": "16.2.2"
},
{
"status": "affected",
"version": "3.8.0E"
},
{
"status": "affected",
"version": "3.8.1E"
},
{
"status": "affected",
"version": "3.8.2E"
},
{
"status": "affected",
"version": "3.8.3E"
},
{
"status": "affected",
"version": "3.8.4E"
},
{
"status": "affected",
"version": "16.3.1"
},
{
"status": "affected",
"version": "16.3.2"
},
{
"status": "affected",
"version": "16.3.3"
},
{
"status": "affected",
"version": "16.3.1a"
},
{
"status": "affected",
"version": "16.3.4"
},
{
"status": "affected",
"version": "16.4.1"
},
{
"status": "affected",
"version": "16.4.2"
},
{
"status": "affected",
"version": "16.5.1"
},
{
"status": "affected",
"version": "16.5.1a"
},
{
"status": "affected",
"version": "16.5.1b"
},
{
"status": "affected",
"version": "3.18.1aSP"
},
{
"status": "affected",
"version": "3.18.2aSP"
},
{
"status": "affected",
"version": "3.9.0E"
},
{
"status": "affected",
"version": "3.9.1E"
},
{
"status": "affected",
"version": "3.9.2E"
},
{
"status": "affected",
"version": "17.11.99SW"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these vulnerabilities by sending a crafted SNMP packet to an affected system via IPv4 or IPv6. Only traffic directed to an affected system can be used to exploit these vulnerabilities.\r\n\r The vulnerabilities are due to a buffer overflow condition in the SNMP subsystem of the affected software. The vulnerabilities affect all versions of SNMP - Versions 1, 2c, and 3. To exploit these vulnerabilities via SNMP Version 2c or earlier, the attacker must know the SNMP read-only community string for the affected system. To exploit these vulnerabilities via SNMP Version 3, the attacker must have user credentials for the affected system. A successful exploit could allow the attacker to execute arbitrary code and obtain full control of the affected system or cause the affected system to reload.\r\n\r Customers are advised to apply the workaround as contained in the Workarounds section below. Fixed software information is available via the Cisco IOS Software Checker. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable.\r\n\r There are workarounds that address these vulnerabilities."
}
],
"exploits": [
{
"lang": "en",
"value": "At the time of initial publication, Cisco was aware of external knowledge of the vulnerabilities described in this advisory and, as a precaution, notified customers about the potential for exploitation.\r\n\r\nOn January 6, 2017, a security researcher published functional exploit code for these vulnerabilities.\r\n\r\nThe Cisco Product Security Incident Response Team (PSIRT) is aware of exploitation of the following vulnerabilities that are described in this advisory:\r\n\r\nCVE-2017-6736\r\nCVE-2017-6737\r\nCVE-2017-6738\r\nCVE-2017-6739\r\nCVE-2017-6740\r\nCVE-2017-6742\r\nCVE-2017-6743\r\nCVE-2017-6744\r\n\r\nThe Cisco PSIRT is aware of exploit code available for CVE-2017-6741.\r\n\r\nAdditional information can be found at Cisco TALOS: DNS Hijacking Abuses Trust In Core Internet Service [\"https://blog.talosintelligence.com/2019/04/seaturtle.html\"]."
}
],
"metrics": [
{
"cvssV3_0": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"format": "cvssV3_0"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-119",
"description": "Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-07-31T16:22:43.000Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-20170629-snmp",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp"
}
],
"source": {
"advisory": "cisco-sa-20170629-snmp",
"defects": [
"CSCve89865",
"CSCsy56638"
],
"discovery": "UNKNOWN"
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2017-6738",
"datePublished": "2017-07-17T21:00:00.000Z",
"dateReserved": "2017-03-09T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:55:37.567Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2017-6738",
"date": "2026-10-04",
"epss": "0.10855",
"percentile": "0.95739"
},
"nvd": {
"cve": {
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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},
{
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},
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},
{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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],
"descriptions": [
{
"lang": "en",
"value": "The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these vulnerabilities by sending a crafted SNMP packet to an affected system via IPv4 or IPv6. Only traffic directed to an affected system can be used to exploit these vulnerabilities.\r\n\r The vulnerabilities are due to a buffer overflow condition in the SNMP subsystem of the affected software. The vulnerabilities affect all versions of SNMP - Versions 1, 2c, and 3. To exploit these vulnerabilities via SNMP Version 2c or earlier, the attacker must know the SNMP read-only community string for the affected system. To exploit these vulnerabilities via SNMP Version 3, the attacker must have user credentials for the affected system. A successful exploit could allow the attacker to execute arbitrary code and obtain full control of the affected system or cause the affected system to reload.\r\n\r Customers are advised to apply the workaround as contained in the Workarounds section below. Fixed software information is available via the Cisco IOS Software Checker. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable.\r\n\r There are workarounds that address these vulnerabilities."
}
],
"exploits": [
{
"lang": "en",
"value": "At the time of initial publication, Cisco was aware of external knowledge of the vulnerabilities described in this advisory and, as a precaution, notified customers about the potential for exploitation.\r\n\r\nOn January 6, 2017, a security researcher published functional exploit code for these vulnerabilities.\r\n\r\nThe Cisco Product Security Incident Response Team (PSIRT) is aware of exploitation of the following vulnerabilities that are described in this advisory:\r\n\r\nCVE-2017-6736\r\nCVE-2017-6737\r\nCVE-2017-6738\r\nCVE-2017-6739\r\nCVE-2017-6740\r\nCVE-2017-6742\r\nCVE-2017-6743\r\nCVE-2017-6744\r\n\r\nThe Cisco PSIRT is aware of exploit code available for CVE-2017-6741.\r\n\r\nAdditional information can be found at Cisco TALOS: DNS Hijacking Abuses Trust In Core Internet Service [\"https://blog.talosintelligence.com/2019/04/seaturtle.html\"]."
}
],
"metrics": [
{
"cvssV3_0": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"format": "cvssV3_0"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-119",
"description": "Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-07-31T16:22:43.000Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-20170629-snmp",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp"
}
],
"source": {
"advisory": "cisco-sa-20170629-snmp",
"defects": [
"CSCve89865",
"CSCsy56638"
],
"discovery": "UNKNOWN"
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2017-6738",
"datePublished": "2017-07-17T21:00:00.000Z",
"dateReserved": "2017-03-09T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:55:37.567Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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