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().
5426 vulnerabilities reference this CWE, most recent first.
CVE-2025-64524 (GCVE-0-2025-64524)
Vulnerability from cvelistv5 – Published: 2025-11-20 18:05 – Updated: 2025-11-21 16:06
VLAI
EPSS
VEX
Title
CUPS rastertopclx Filter Vulnerable to Heap Buffer Overflow Leading to Potential Arbitrary Code Execution
Summary
cups-filters contains backends, filters, and other software required to get the cups printing service working on operating systems other than macos. In versions 2.0.1 and prior, a heap-buffer-overflow vulnerability in the rastertopclx filter causes the program to crash with a segmentation fault when processing maliciously crafted input data. This issue can be exploited to trigger memory corruption, potentially leading to arbitrary code execution. This issue has been patched via commit 956283c.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-21 16:06 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/OpenPrinting/cups-filters/secu… | x_refsource_CONFIRM |
| https://github.com/OpenPrinting/cups-filters/comm… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2025/11/20/1 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenPrinting | cups-filters |
Affected:
<= 2.0.1
|
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CVE-2025-64330 (GCVE-0-2025-64330)
Vulnerability from cvelistv5 – Published: 2025-11-26 23:03 – Updated: 2025-11-28 15:36
VLAI
EPSS
VEX
Title
Suricata is vulnerable to a heap buffer overflow on verdict
Summary
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, a single byte read heap overflow when logging the verdict in eve.alert and eve.drop records can lead to crashes. This requires the per packet alert queue to be filled with alerts and then followed by a pass rule. This issue has been patched in versions 7.0.13 and 8.0.2. To reduce the likelihood of this issue occurring, the alert queue size a should be increased (packet-alert-max in suricata.yaml) if verdict is enabled.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-28 15:36 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/OISF/suricata/security/advisor… | x_refsource_CONFIRM |
| https://github.com/OISF/suricata/commit/482e5eac9… | x_refsource_MISC |
Impacted products
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CVE-2025-64031 (GCVE-0-2025-64031)
Vulnerability from cvelistv5 – Published: 2026-09-14 00:00 – Updated: 2026-09-16 14:22
VLAI
EPSS
VEX
Summary
libarchive 3.8.x before 3.8.2 has a strcpy heap-based buffer overflow in the gzip writer via the original-filename field to archive_compressor_gzip_open in archive_write_add_filter_gzip.c, aka GHSA-92wx-p669-8gr9. This relates to bsdtar. Exploitation envisions a marginally plausible scenario in which original-filename is obtained from an untrusted party. (original-filename is not derived from the input data.)
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 14:22 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| libarchive | libarchive |
Affected:
3.8.0 , < 3.8.2
(semver)
cpe:2.3:a:libarchive:libarchive:*:*:*:*:*:*:*:* |
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CVE-2025-62799 (GCVE-0-2025-62799)
Vulnerability from cvelistv5 – Published: 2026-02-03 19:26 – Updated: 2026-02-03 20:40
VLAI
EPSS
VEX
Title
FastDDS's heap buffer overflow in RTPS DATA_FRAG enables unauthenticated DoS (potential RCE)
Summary
Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group
). Prior to versions 3.4.1, 3.3.1, and 2.6.11, a heap buffer overflow exists in the Fast-DDS DATA_FRAG receive path. An un
authenticated sender can transmit a single malformed RTPS DATA_FRAG packet where `fragmentSize` and `sampleSize` are craft
ed to violate internal assumptions. Due to a 4-byte alignment step during fragment metadata initialization, the code write
s past the end of the allocated payload buffer, causing immediate crash (DoS) and potentially enabling memory corruption (
RCE risk). Versions 3.4.1, 3.3.1, and 2.6.11 patch the issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-03 20:40 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
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CVE-2025-62689 (GCVE-0-2025-62689)
Vulnerability from cvelistv5 – Published: 2025-11-10 04:10 – Updated: 2025-11-14 18:01
VLAI
EPSS
VEX
Summary
NULL pointer dereference vulnerability exists in GNU libmicrohttpd v1.0.2 and earlier. The vulnerability was fixed in commit ff13abc on the master branch of the libmicrohttpd Git repository, after the v1.0.2 tag. A specially crafted packet sent by an attacker could cause a denial-of-service (DoS) condition.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-14 18:01 UTC
CWE
- CWE-122 - Heap-based buffer overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GNU Project | GNU libbmicrohttpd |
Affected:
v1.0.2 and earlier (The vulnerability remains in the source code up until commit ff13abc on the master branch of the libmicrohttpd Git repository
Affected: after the v1.0.2 tag.) |
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CVE-2025-62673 (GCVE-0-2025-62673)
Vulnerability from cvelistv5 – Published: 2026-02-03 18:53 – Updated: 2026-09-22 22:33
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow Vulnerability in Archer AX53 and AX12
Summary
Heap-based Buffer Overflow vulnerability in Archer AX53 v1.0 and AX12 v1.0 (tdpserver modules) allows adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted network packet containing a maliciously formed field.
This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120 and Archer AX12 v1.0: up to 1.5.1 Build 20260721.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-04 04:56 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| TP-Link Systems Inc. | Archer AX53 v1.0 |
Affected:
0 , ≤ 1.3.1 Build 20241120
(custom)
|
|
| TP-Link Systems Inc. | Archer AX12 v1 |
Affected:
0 , < 1.5.1 Build 20260721
(custom)
|
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CVE-2025-62624 (GCVE-0-2025-62624)
Vulnerability from cvelistv5 – Published: 2026-05-13 02:58 – Updated: 2026-05-14 14:38
VLAI
EPSS
VEX
Summary
A heap-based buffer overflow in the ionic cloud driver for VMware ESXi could allow an attacker to achieve privilege escalation, potentially resulting in arbitrary code execution.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 00:00 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AMD | ESXi 8.x and ESXi 9.x hosts using AMD-Pensando DPU products |
Unaffected:
ESXi 8.0U3i, included in VCF 5.2.3.0 or 9.0.2 releases
|
Date Public
2026-05-14 14:38
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CVE-2025-62608 (GCVE-0-2025-62608)
Vulnerability from cvelistv5 – Published: 2025-11-21 18:56 – Updated: 2025-11-21 19:10
VLAI
EPSS
VEX
Title
MLX has heap-buffer-overflow in load()
Summary
MLX is an array framework for machine learning on Apple silicon. Prior to version 0.29.4, there is a heap buffer overflow in mlx::core::load() when parsing malicious NumPy .npy files. Attacker-controlled file causes 13-byte out-of-bounds read, leading to crash or information disclosure. This issue has been patched in version 0.29.4.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-21 19:09 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/ml-explore/mlx/security/adviso… | x_refsource_CONFIRM |
| https://github.com/ml-explore/mlx/pull/1 | x_refsource_MISC |
| https://github.com/ml-explore/mlx/pull/2 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ml-explore | mlx |
Affected:
< 0.29.4
|
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CVE-2025-62602 (GCVE-0-2025-62602)
Vulnerability from cvelistv5 – Published: 2026-02-03 19:20 – Updated: 2026-02-03 20:54
VLAI
EPSS
VEX
Title
FastDDS has heap buffer overflow in readData via Manipulated DATA Submessage when DDS Security is enabled
Summary
Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group
). Prior to versions 3.4.1, 3.3.1, and 2.6.11, when the security mode is enabled, modifying the DATA Submessage within an
SPDP packet sent by a publisher causes a heap buffer overflow, resulting in remote termination of Fast-DDS. If the fields
of `PID_IDENTITY_TOKEN` or `PID_PERMISSIONS_TOKEN` in the DATA Submessage are tampered with — specially `readOctetVector`
reads an unchecked `vecsize` that is propagated unchanged into `readData` as the `length` parameter — the attacker-contro
lled `vecsize` can trigger a 32-bit integer overflow during the `length` calculation. That overflow can cause large alloca
tion attempt that quickly leads to OOM, enabling a remotely-triggerable denial-of-service and remote process termination.
Versions 3.4.1, 3.3.1, and 2.6.11 patch the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-03 20:53 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
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CVE-2025-62601 (GCVE-0-2025-62601)
Vulnerability from cvelistv5 – Published: 2026-02-03 19:16 – Updated: 2026-02-03 21:11
VLAI
EPSS
VEX
Title
FastDDS has heap buffer overflow in readString via Manipulated DATA Submessage when DDS Security is enabled
Summary
Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group
). Prior to versions 3.4.1, 3.3.1, and 2.6.11, when the security mode is enabled, modifying the DATA Submessage within an
SPDP packet sent by a publisher causes a heap buffer overflow, resulting in remote termination of Fast-DDS. If the fields
of `PID_IDENTITY_TOKEN` or `PID_PERMISSIONS_TOKEN` in the DATA Submessage — specifically by tampering with the `str_size`
value read by `readString` (called from `readBinaryProperty`) — are modified, a 32-bit integer overflow can occur, causing
`std::vector::resize` to use an attacker-controlled size and quickly trigger heap buffer overflow and remote process term
ination. Versions 3.4.1, 3.3.1, and 2.6.11 patch the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-03 21:10 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
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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.