Common Weakness Enumeration
CWE-122
AllowedHeap-based Buffer Overflow
Abstraction: Variant · Status: Draft
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
5424 vulnerabilities reference this CWE, most recent first.
CVE-2026-76889 (GCVE-0-2026-76889)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:35 – Updated: 2026-09-17 18:46
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
UMTS FP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:08 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.8
(semver)
Affected: 4.4.0 , < 4.4.18 (semver) |
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CVE-2026-76888 (GCVE-0-2026-76888)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:35 – Updated: 2026-09-17 18:46
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
RDP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:05 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.8
(semver)
Affected: 4.4.0 , < 4.4.18 (semver) |
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CVE-2026-76887 (GCVE-0-2026-76887)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:35 – Updated: 2026-09-17 18:46
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
Crash in the Wireshark dissection engine in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:02 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.8
(semver)
Affected: 4.4.0 , < 4.4.18 (semver) |
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CVE-2026-76886 (GCVE-0-2026-76886)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:35 – Updated: 2026-08-20 15:01
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 15:01 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.8
(semver)
Affected: 4.4.0 , < 4.4.18 (semver) |
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CVE-2026-76883 (GCVE-0-2026-76883)
Vulnerability from cvelistv5 – Published: 2026-08-19 22:35 – Updated: 2026-09-17 18:45
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
Catapult DCT2000 file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service
Severity
4.7 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 14:15 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.8
(semver)
Affected: 4.4.0 , < 4.4.18 (semver) |
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CVE-2026-76471 (GCVE-0-2026-76471)
Vulnerability from cvelistv5 – Published: 2026-10-07 16:15 – Updated: 2026-10-08 03:55
VLAI
EPSS
VEX
Title
Cisco NX-OS Software NX-API Remote Code Execution Vulnerability
Summary
A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device.
The vulnerability is due to insufficient input validation of data that is sent to the NX-API. An attacker could exploit this vulnerability by sending a crafted HTTP request to the NX-API of an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges and could cause process crashes, which could result in a reload of the device and a DoS condition.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 00:00 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco NX-OS Software |
Affected:
9.2(3)
Affected: 9.2(2v) Affected: 9.2(1) Affected: 9.2(2t) Affected: 9.2(3y) Affected: 9.3(2) Affected: 9.2(4) Affected: 9.3(1) Affected: 9.3(1z) Affected: 9.2(2) Affected: 9.3(3) Affected: 9.3(4) Affected: 9.3(5) Affected: 9.3(6) Affected: 9.3(5w) Affected: 9.3(7) Affected: 9.3(7k) Affected: 9.3(7a) Affected: 9.3(8) Affected: 9.3(9) Affected: 9.3(10) Affected: 10.3(1) Affected: 10.3(2) Affected: 9.3(11) Affected: 10.3(3) Affected: 9.3(12) Affected: 10.4(1) Affected: 10.3(99w) Affected: 10.3(3w) Affected: 10.3(99x) Affected: 10.3(3o) Affected: 10.3(4) Affected: 10.3(3p) Affected: 10.3(4a) Affected: 10.4(2) Affected: 10.3(3q) Affected: 9.3(13) Affected: 10.3(5) Affected: 10.4(3) Affected: 10.3(3x) Affected: 10.3(4g) Affected: 10.5(1) Affected: 10.3(3r) Affected: 10.3(6) Affected: 9.3(14) Affected: 10.4(4) Affected: 10.3(4h) Affected: 10.5(2) Affected: 10.3(7) Affected: 10.4(5) Affected: 10.5(3) Affected: 9.3(15) Affected: 10.4(4g) Affected: 10.5(4) Affected: 10.6(1) Affected: 10.5(3t) Affected: 10.3(8) Affected: 10.4(6) Affected: 10.5(3s) Affected: 10.5(3e) Affected: 10.5(3o) Affected: 9.3(16) Affected: 10.6(1s) Affected: 10.6(2) Affected: 10.5(3p) Affected: 10.3(9) Affected: 10.6(2s) Affected: 10.6(3) Affected: 10.4(7) Affected: 10.5(5) Affected: 9.3(17) Affected: 10.6(2n) Affected: 10.6(3s) |
|
| Cisco | Cisco Unified Computing System (Managed) |
Affected:
4.0(1a)
Affected: 4.1(1d) Affected: 4.0(4f) Affected: 4.0(4a) Affected: 4.0(4e) Affected: 4.0(4c) Affected: 4.0(4h) Affected: 4.1(1c) Affected: 4.0(2a) Affected: 4.1(1e) Affected: 4.1(2a) Affected: 4.0(2b) Affected: 4.0(1b) Affected: 4.0(4d) Affected: 4.0(2e) Affected: 4.1(1a) Affected: 4.0(4g) Affected: 4.0(1c) Affected: 4.0(1d) Affected: 4.0(4b) Affected: 4.0(4i) Affected: 4.0(2d) Affected: 4.1(1b) Affected: 4.1(2b) Affected: 4.0(4k) Affected: 4.1(3a) Affected: 4.1(3b) Affected: 4.1(2c) Affected: 4.0(4l) Affected: 4.1(4a) Affected: 4.1(3c) Affected: 4.1(3d) Affected: 4.2(1c) Affected: 4.2(1d) Affected: 4.0(4m) Affected: 4.1(3e) Affected: 4.2(1f) Affected: 4.1(3f) Affected: 4.2(1i) Affected: 4.1(3h) Affected: 4.2(1k) Affected: 4.2(1l) Affected: 4.0(4n) Affected: 4.2(1m) Affected: 4.1(3i) Affected: 4.2(2a) Affected: 4.2(1n) Affected: 4.1(3j) Affected: 4.2(2c) Affected: 4.2(2d) Affected: 4.2(3b) Affected: 4.1(3k) Affected: 4.0(4o) Affected: 4.2(2e) Affected: 4.2(3d) Affected: 4.2(3e) Affected: 4.2(3g) Affected: 4.1(3l) Affected: 4.3(2b) Affected: 4.2(3h) Affected: 4.2(3i) Affected: 4.3(2c) Affected: 4.1(3m) Affected: 4.3(2e) Affected: 4.3(3a) Affected: 4.2(3j) Affected: 4.3(3c) Affected: 4.3(4a) Affected: 4.2(3k) Affected: 4.3(4b) Affected: 4.3(4c) Affected: 4.2(3l) Affected: 4.3(4d) Affected: 4.3(2f) Affected: 4.2(3m) Affected: 4.3(5a) Affected: 4.3(4e) Affected: 4.1(3n) Affected: 4.3(4f) Affected: 4.2(3n) Affected: 4.3(5c) Affected: 4.2(3o) Affected: 4.3(5d) Affected: 4.3(6a) Affected: 4.3(6b) Affected: 4.3(5e) Affected: 4.3(6c) Affected: 4.2(3p) Affected: 4.3(6d) Affected: 4.3(6e) Affected: 4.3(6f) Affected: 4.2(3r) Affected: 4.3(6g) Affected: 4.3(6h) Affected: 4.2(3s) Affected: 4.3(6i) |
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"value": "A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device.\u0026nbsp;\r\n\r\nThe vulnerability is due to insufficient input validation of data that is sent to the NX-API. An attacker could exploit this vulnerability by sending a crafted HTTP request to the NX-API of an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges and could cause process crashes, which could result in a reload of the device and a DoS condition."
}
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"name": "cisco-sa-napi-rce-r2shwu2j",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-napi-rce-r2shwu2j"
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"defects": [
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"title": "Cisco NX-OS Software NX-API Remote Code Execution Vulnerability"
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CVE-2026-75893 (GCVE-0-2026-75893)
Vulnerability from cvelistv5 – Published: 2026-09-18 18:40 – Updated: 2026-09-21 18:16
VLAI
EPSS
VEX
Title
Heap based buffer overflow at ipaccess_proxy_read_msg()
Summary
In osmo-bsc from 1.0.1 through 1.14.1 a heap based buffer overflow issue was found in the ipaccess_proxy_read_msg() function via IPA frame lengths.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 18:15 UTC
CWE
- CWE-122 - Heap-based buffer overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://cgit.osmocom.org/osmo-bsc/commit/?id=2852… | patchmitigation |
Impacted products
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CVE-2026-75883 (GCVE-0-2026-75883)
Vulnerability from cvelistv5 – Published: 2026-09-18 15:29 – Updated: 2026-09-22 14:43
VLAI
EPSS
VEX
Title
PPPD buffer overflow in PEAP response code
Summary
The code in pppd that formats a response to a PEAP Request packet in peap_response() copies an entire TLS record of up to 16384 bytes into the fixed global buffer outpacket_buf
without checking the available space and without implementing outgoing
PEAP fragmentation. Thus a pppd process connecting to a server which
requests PEAP authentication can be induced to corrupt global static
data following the outpacket_buf array, most likely causing incorrect behavior or a crash.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 14:43 UTC
CWE
- CWE-122 - Heap-based buffer overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/ppp-project/ppp/security/advis… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| PPP Project | ppp |
Affected:
0 , ≤ 2.5.0
(semver)
Unaffected: 2.5.4 (semver) |
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CVE-2026-75818 (GCVE-0-2026-75818)
Vulnerability from cvelistv5 – Published: 2026-10-06 10:57 – Updated: 2026-10-06 12:50 X_Open Source
VLAI
EPSS
VEX
Title
Heap Buffer Overflow in GNU Aspell's prezip utility
Summary
GNU Aspell prezip-bin contains a heap-based buffer overflow vulnerability in the decompressor in prog/prezip.c. The decompressor does not properly check buffer space, so a crafted compressed file can cause out-of-bounds read and write operations on the heap. An attacker who convinces a user to process a malicious compressed file with prezip-bin can trigger memory corruption, leading to a processs crash.
This issue was fixed in commit 15b188437f9e0192d4ac4472ad66a4e2f62a782f which will be released in version 0.60.8.3.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 12:50 UTC
CWE
- CWE-122 - Heap-based buffer overflow
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/10/CVE-2026-75818 | third-party-advisory |
| http://aspell.net/ | product |
Impacted products
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CVE-2026-75769 (GCVE-0-2026-75769)
Vulnerability from cvelistv5 – Published: 2026-08-25 17:58 – Updated: 2026-08-27 22:32
VLAI
EPSS
VEX
Title
Substance3D - Painter | Heap-based Buffer Overflow (CWE-122)
Summary
Substance3D - Painter is affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 00:00 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow (CWE-122)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/substan… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Substance3D - Painter |
Affected:
0 , ≤ 12.1.2
(semver)
Unaffected: 12.1.3 (semver) |
Date Public
2026-08-25 17:00
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Mitigation
Pre-design: Use a language or compiler that performs automatic bounds checking.
Mitigation
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation MIT-10
Operation
Build and Compilation
Strategy: Environment Hardening
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
- D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-11
Operation
Build and Compilation
Strategy: Environment Hardening
- Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
- Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
- For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation
Implementation
Implement and perform bounds checking on input.
Mitigation
Implementation
Strategy: Libraries or Frameworks
Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
Mitigation
Operation
Use OS-level preventative functionality. This is not a complete solution, but it provides some defense in depth.
CAPEC-92: Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.