Common Weakness Enumeration
CWE-191
AllowedInteger Underflow (Wrap or Wraparound)
Abstraction: Base · Status: Draft
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
794 vulnerabilities reference this CWE, most recent first.
CVE-2026-102714 (GCVE-0-2026-102714)
Vulnerability from cvelistv5 – Published: 2026-09-29 17:41 – Updated: 2026-09-29 18:43
VLAI
EPSS
VEX
Summary
`_nx_icmpv6_validate_options()` scans the option area with `while (length > 2)` (`common/src/nx_icmpv6_validate_options.c:79`). An area whose size leaves a one- or two-byte residue exits the loop with that tail unexamined; the residue is not negative, so the function returns `NX_SUCCESS`. Its zero-length rejection never sees those bytes.
Every consumer then re-walks the same area, reading a two-byte option header at the residue and subtracting `nx_icmpv6_option_length << 3` with no zero check and no remaining-length check. Three outcomes follow, selected by bytes the attacker controls.
**Zero length byte.** The walker subtracts zero and advances zero. All four handlers loop forever — `_nx_icmpv6_process_ra` (`nx_icmpv6_process_ra.c:245, :528`), `_nx_icmpv6_process_ns` (`:251, :329`), `_nx_icmpv6_process_na` (`:147, :156`) and `_nx_icmpv6_process_redirect` (`:247, :350`). The walk runs in the IP thread, which is the highest-priority thread and does not yield inside the loop, so the system stops until a watchdog reset and the frame can be replayed after each one.
**Non-zero length byte on a short residue.** The three unsigned counters underflow — `2 - 8` becomes `0xFFFFFFFA` — and the walk continues past the packet buffer, reading until it faults or meets a zero length byte and freezes. The Router Advertisement counter is signed and exits cleanly in this case.
**One-byte residue.** The walker reads a two-byte option header, over-reading one byte.
During a runaway walk, stray bytes parsing as a link-layer address option are copied into the neighbor cache (`nx_icmpv6_process_ns.c:280, :293`) and subsequently used as the destination MAC for frames to that neighbour, placing off-packet memory on the link. Confirmed by inspection, not reproduced.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 18:42 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Eclipse Foundation | NetX Duo |
Affected:
0 , ≤ 6.5.1.202602
(semver)
|
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CVE-2026-95958 (GCVE-0-2026-95958)
Vulnerability from cvelistv5 – Published: 2026-09-23 02:45 – Updated: 2026-09-23 17:49 X_Open Source
VLAI
EPSS
VEX
Title
JusticeRage Manalyze PE Parser pe.cpp _parse_relocations integer underflow
Summary
A security flaw has been discovered in JusticeRage Manalyze 1.0.0. Impacted is the function PE::_parse_relocations of the file manape/pe.cpp of the component PE Parser. Performing a manipulation of the argument BlockSize results in integer underflow. The attack requires a local approach. The patch is named c372b6bbca9d8c63812be50596fefa4a79c65fd0. It is recommended to apply a patch to fix this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 17:49 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/408568 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/408568/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-95958 | third-party-advisory |
| https://vuldb.com/submit/953395 | third-party-advisory |
| https://github.com/JusticeRage/Manalyze/commit/c3… | patch |
| https://github.com/JusticeRage/Manalyze/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| JusticeRage | Manalyze |
Affected:
1.0.0
cpe:2.3:a:justicerage:manalyze:*:*:*:*:*:*:*:* |
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CVE-2026-94090 (GCVE-0-2026-94090)
Vulnerability from cvelistv5 – Published: 2026-09-20 22:00 – Updated: 2026-09-21 19:45 X_Open Source
VLAI
EPSS
VEX
Title
JusticeRage Manalyze PE Parser pe.cpp _parse_debug integer underflow
Summary
A security flaw has been discovered in JusticeRage Manalyze 1.0.0. The affected element is the function PE::_parse_debug of the file manape/pe.cpp of the component PE Parser. The manipulation of the argument misc.Length results in integer underflow. The attack may be performed from remote. The patch is identified as 3e299685759f4f767088871de58c5d07f98ee382. A patch should be applied to remediate this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 19:45 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/408019 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/408019/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-94090 | third-party-advisory |
| https://vuldb.com/submit/952519 | third-party-advisory |
| https://github.com/JusticeRage/Manalyze/commit/3e… | patch |
| https://github.com/JusticeRage/Manalyze/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| JusticeRage | Manalyze |
Affected:
1.0.0
cpe:2.3:a:justicerage:manalyze:*:*:*:*:*:*:*:* |
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CVE-2026-93599 (GCVE-0-2026-93599)
Vulnerability from cvelistv5 – Published: 2026-09-18 13:20 – Updated: 2026-09-18 14:15
VLAI
EPSS
VEX
Title
rustls-webpki before 0.103.13 Panic via empty BIT STRING
Summary
rustls-webpki through 0.103.12 (and 0.104.0-alpha releases before 0.104.0-alpha.7) contains a reachable panic in bit_string_flags() in src/der.rs. The input guard fails to reject a named-bit BIT STRING whose content is exactly [0x00] (zero padding bits and no data bytes), so raw_bits.len() - 1 underflows on the empty slice and the subsequent index operation panics (subtract-with-overflow in debug, index-out-of-bounds in release). The condition is reachable through the public API BorrowedCertRevocationList::from_der() when a CRL contains an issuingDistributionPoint extension with such an onlySomeReasons value. Exploitation requires an application that explicitly opts in to CRL revocation checking by passing RevocationOptions to verify_for_usage() and that parses CRL bytes obtained from a source the attacker can influence; the default rustls configuration, which does not use RevocationOptions, is unaffected. A crafted CRL causes a denial of service via the panic. Fixed in 0.103.13 and 0.104.0-alpha.7.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 14:04 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/rustls/webpki/security/advisor… | vendor-advisory |
| https://www.vulncheck.com/advisories/rustls-webpk… | third-party-advisory |
Impacted products
Date Public
2026-04-21 00:00
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CVE-2026-93395 (GCVE-0-2026-93395)
Vulnerability from cvelistv5 – Published: 2026-09-17 20:34 – Updated: 2026-09-18 14:31
VLAI
EPSS
VEX
Title
Integer Underflow → Heap Out-of-Bounds Read in `bson_new_from_buffer()
Summary
A missing lower-bound validation in the bson_new_from_buffer() function of libbson allows an integer underflow when processing BSON data with a zero-length prefix. The function reads a 32-bit document length from the input buffer but does not verify that the value is at least 5 (the minimum valid BSON document size) before using it in an array index calculation. When the length field is zero, the expression used to check the document's null terminator wraps to UINT32_MAX, causing a heap out-of-bounds read that crashes the process. An unauthorized party who can supply crafted BSON input to an application using this API can cause a denial of service.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 14:27 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB Inc. | C Driver |
Affected:
2.0.0 , < 2.3.1
(semver)
|
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CVE-2026-91948 (GCVE-0-2026-91948)
Vulnerability from cvelistv5 – Published: 2026-09-15 15:18 – Updated: 2026-09-17 11:59
VLAI
EPSS
VEX
Title
FreeRDP before 3.31.0 Out-of-bounds Write via SHOW_PROTOCOL
Summary
FreeRDP versions before 3.31.0 contain an out-of-bounds write vulnerability in server-side static virtual channel handling when CHANNEL_OPTION_SHOW_PROTOCOL is enabled. Authenticated clients can queue oversized channel messages that cause buffer underflow and corrupt heap memory including live pointers, potentially enabling code execution.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 03:56 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://github.com/FreeRDP/FreeRDP/commit/40d9202… | patch |
| https://www.vulncheck.com/advisories/freerdp-befo… | third-party-advisory |
Impacted products
Date Public
2026-09-01 00:00
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CVE-2026-91103 (GCVE-0-2026-91103)
Vulnerability from cvelistv5 – Published: 2026-09-16 18:52 – Updated: 2026-09-17 13:41
VLAI
EPSS
VEX
Title
HP Linux Imaging and Printing (HPLIP) Software– Multiple Vulnerabilities
Summary
HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 11:56 UTC
CWE
- CWE-191 - Integer underflow (wrap or wraparound)
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HP Inc. | HP Linux Imaging and Printing Software (HPLIP) |
Affected:
0 , < 3.26.6
(custom)
cpe:2.3:a:hp_inc.:hp_linux_imaging_and_printing_software_hplip_:*:*:linux:*:*:*:*:* |
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CVE-2026-90996 (GCVE-0-2026-90996)
Vulnerability from cvelistv5 – Published: 2026-09-14 15:55 – Updated: 2026-09-22 14:47
VLAI
EPSS
VEX
Title
Sssd: sssd: denial of service in nss responder via crafted zero-length requests
Summary
A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 15:15 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-90996 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2478986 | issue-trackingx_refsource_REDHAT |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
Date Public
2026-09-14 14:50
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CVE-2026-89028 (GCVE-0-2026-89028)
Vulnerability from cvelistv5 – Published: 2026-09-16 13:12 – Updated: 2026-10-01 15:21
VLAI
EPSS
VEX
Title
MikroTik RouterOS < 7.24 Heap Corruption via SMB1 SessionSetupAndX
Summary
MikroTik RouterOS before 7.24 contains a heap memory corruption vulnerability in the userspace SMB daemon that allows remote attackers to corrupt adjacent heap memory by supplying a crafted uniPwdLen value in the SMB1 SessionSetupAndX handler. An attacker can send a malformed SMB1 request with a uniPwdLen field that triggers an integer underflow, causing the resulting value to be used as the copy length in a memory copy operation into a smaller heap buffer, corrupting adjacent heap memory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 19:16 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://forum.mikrotik.com/t/7-24-stable-is-relea… | vendor-advisorypatch |
| https://www.vulncheck.com/advisories/mikrotik-rou… | third-party-advisory |
Impacted products
Date Public
2026-08-17 00:00
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CVE-2026-86133 (GCVE-0-2026-86133)
Vulnerability from cvelistv5 – Published: 2026-09-29 23:05 – Updated: 2026-09-30 15:28
VLAI
EPSS
VEX
Title
Fireware OS Pre-Authentication Integer Underflow in iked Allows Remote Denial of Service
Summary
An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 14:24 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-86133 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WatchGuard | Fireware OS |
Affected:
2026.3 , < 2026.3.2
(custom)
Affected: 2025.0 , < 2026.2.3 (custom) Affected: 12.0 , < 12.12.3 (custom) |
|
| WatchGuard | Fireware OS |
Affected:
12.0 , < 12.5.21
(custom)
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"versionEndExcluding": "2026.2.3",
"versionStartIncluding": "2025.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:watchguard:fireware_os:*:*:*:*:*:*:*:*",
"versionEndExcluding": "12.12.3",
"versionStartIncluding": "12.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "WatchGuard AI Security Research"
}
],
"descriptions": [
{
"lang": "en",
"value": "An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service."
}
],
"exploits": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "WatchGuard is not aware of any exploitation of this vulnerability in the wild."
}
],
"value": "WatchGuard is not aware of any exploitation of this vulnerability in the wild."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 8.2,
"baseSeverity": "HIGH",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1284",
"description": "CWE-1284",
"lang": "en",
"type": "CWE"
},
{
"cweId": "CWE-191",
"description": "CWE-191",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-29T23:05:47.652Z",
"orgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
"shortName": "WatchGuard"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://psirt.watchguard.com/CVE-2026-86133"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Fireware OS 2026.3.2, Fireware OS 2026.2.3, Fireware OS 12.12.3, Fireware OS 12.5.21"
}
],
"value": "Fireware OS 2026.3.2, Fireware OS 2026.2.3, Fireware OS 12.12.3, Fireware OS 12.5.21"
}
],
"title": "Fireware OS Pre-Authentication Integer Underflow in iked Allows Remote Denial of Service"
}
},
"cveMetadata": {
"assignerOrgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
"assignerShortName": "WatchGuard",
"cveId": "CVE-2026-86133",
"datePublished": "2026-09-29T23:05:47.652Z",
"dateReserved": "2026-09-05T03:00:39.457Z",
"dateUpdated": "2026-09-30T15:28:13.147Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.