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-2026-7378 (GCVE-0-2026-7378)
Vulnerability from cvelistv5 – Published: 2026-04-30 05:04 – Updated: 2026-04-30 15:21
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
Crash in sharkd 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-30 14:48 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.5
(semver)
Affected: 4.4.0 , < 4.4.15 (semver) |
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CVE-2026-7310 (GCVE-0-2026-7310)
Vulnerability from cvelistv5 – Published: 2026-05-26 11:43 – Updated: 2026-05-26 14:42
VLAI
EPSS
VEX
Summary
A heap-based buffer overflow vulnerability exists in XML
parser functionality in the HiDraw. An authenticated
malicious user with local access can exploit this
vulnerability using a specially crafted XML file which may
lead to memory corruption and potential arbitrary code
execution. Successful exploitation could result in
application crashes (denial of service) and compromise the
confidentiality and integrity of the affected system.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-26 14:31 UTC
CWE
- CWE-122 - Heap-based buffer overflow
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Hitachi Energy | MACH HiDraw |
Affected:
9.0 , < 9.22
(custom)
|
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CVE-2026-7040 (GCVE-0-2026-7040)
Vulnerability from cvelistv5 – Published: 2026-04-27 12:29 – Updated: 2026-05-01 16:03
VLAI
EPSS
VEX
Title
Text::Minify::XS versions from 0.3.0 before 0.7.8 for Perl have heap overflow when processing some malformed UTF-8 characters
Summary
Text::Minify::XS versions from 0.3.0 before 0.7.8 for Perl have a heap overflow when processing some malformed UTF-8 characters.
The minify functions mishandled some malformed UTF-8 characters, leading to heap corruption.
Note that the minify_utf8 function is an alias for minify.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-27 14:19 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/robrwo/Text-Minify-XS/security… | vendor-advisory |
| https://metacpan.org/release/RRWO/Text-Minify-XS-… | release-notes |
| http://www.openwall.com/lists/oss-security/2026/04/27/5 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RRWO | Text::Minify::XS |
Affected:
0.3.0 , < 0.7.8
(custom)
|
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CVE-2026-6846 (GCVE-0-2026-6846)
Vulnerability from cvelistv5 – Published: 2026-04-22 08:37 – Updated: 2026-09-01 12:04
VLAI
EPSS
VEX
Title
Binutils: binutils: arbitrary code execution via malformed xcoff object file processing
Summary
A flaw was found in binutils. A heap-buffer-overflow vulnerability exists when processing a specially crafted XCOFF (Extended Common Object File Format) object file during linking. A local attacker could trick a user into processing this malicious file, which could lead to arbitrary code execution, allowing the attacker to run unauthorized commands, or cause a denial of service, making the system unavailable.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-22 00:00 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:33527 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:39022 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-6846 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2460006 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
10 products
| Vendor | Product | Version | |
|---|---|---|---|
|
Affected:
0 , < 2.47
(semver)
|
|||
| Red Hat | Red Hat Hardened Images |
Unaffected:
2.45.1-5.1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
2.46.1-1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| 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
|
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
2.45.1-5.1.hum1 , < *
(rpm)
Unaffected: 2.46.1-1.hum1 , < * (rpm) cpe:/a:redhat:hummingbird:1 |
Date Public
2026-04-08 00:00
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CVE-2026-6530 (GCVE-0-2026-6530)
Vulnerability from cvelistv5 – Published: 2026-04-30 05:36 – Updated: 2026-04-30 13:14
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
DCP-ETSI protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-30 13:10 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.5
(semver)
Affected: 4.4.0 , < 4.4.15 (semver) |
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CVE-2026-6529 (GCVE-0-2026-6529)
Vulnerability from cvelistv5 – Published: 2026-04-30 05:36 – Updated: 2026-04-30 15:19
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
iLBC audio codec crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-30 14:57 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.5
(semver)
Affected: 4.4.0 , < 4.4.15 (semver) |
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CVE-2026-6491 (GCVE-0-2026-6491)
Vulnerability from cvelistv5 – Published: 2026-04-17 13:45 – Updated: 2026-04-18 02:59
VLAI
EPSS
VEX
Title
libvips nip2 vips7compat.c im_minpos_vec heap-based overflow
Summary
A security vulnerability has been detected in libvips up to 8.18.2. The affected element is the function im_minpos_vec of the file libvips/deprecated/vips7compat.c of the component nip2 Handler. Such manipulation of the argument n leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed publicly and may be used. The vendor confirms that they will "be removing the deprecated area in libvips 8.19".
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-18 02:59 UTC
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/358035 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/358035/cti | signaturepermissions-required |
| https://vuldb.com/submit/786994 | third-party-advisory |
| https://github.com/libvips/libvips/issues/4965 | issue-tracking |
| https://github.com/libvips/libvips/issues/4965#is… | issue-tracking |
| https://github.com/biniamf/pocs/tree/main/libvips… | exploit |
| https://github.com/libvips/libvips/ | product |
Impacted products
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CVE-2026-6210 (GCVE-0-2026-6210)
Vulnerability from cvelistv5 – Published: 2026-05-06 11:59 – Updated: 2026-07-29 08:59
VLAI
EPSS
VEX
Title
Type confusion and heap-buffer-overflow in Qt SVG marker handling causing application crash
Summary
A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image.
When processing SVG marker references, the renderer retrieves a node by its id attribute and casts it to QSvgMarker* without verifying the node type. A non-marker element (such as a <line> element) that references itself as a marker triggers an out-of-bounds heap read due to the object size difference between QSvgLine and QSvgMarker,
followed by an endless recursion that bypasses the marker recursion
guard through incorrect virtual dispatch. The result is an application
crash (denial of service).
This issue affects Qt SVG:
from 6.7.0 before 6.8.8, from 6.9.0 before 6.11.1.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-06 13:11 UTC
CWE
References
Impacted products
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CVE-2026-5653 (GCVE-0-2026-5653)
Vulnerability from cvelistv5 – Published: 2026-04-30 05:38 – Updated: 2026-04-30 12:51
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in Wireshark
Summary
DCP-ETSI protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-30 12:50 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.wireshark.org/security/wnpa-sec-2026-… | |
| https://gitlab.com/wireshark/wireshark/-/issues/21122 | issue-trackingpermissions-required |
| https://gitlab.com/wireshark/wireshark/-/work_ite… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.5
(semver)
Affected: 4.4.0 , < 4.4.15 (semver) |
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CVE-2026-5474 (GCVE-0-2026-5474)
Vulnerability from cvelistv5 – Published: 2026-04-03 17:00 – Updated: 2026-04-03 20:02
VLAI
EPSS
VEX
Title
NASA cFS CCSDS Packet Header to_lab_passthru_encode.c CFE_MSG_GetSize heap-based overflow
Summary
A vulnerability was found in NASA cFS up to 7.0.0. This affects the function CFE_MSG_GetSize of the file apps/to_lab/fsw/src/to_lab_passthru_encode.c of the component CCSDS Packet Header Handler. Performing a manipulation results in heap-based buffer overflow. The attacker must have access to the local network to execute the attack. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-03 20:02 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/355078 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/355078/cti | signaturepermissions-required |
| https://vuldb.com/submit/781950 | third-party-advisory |
| https://github.com/nasa/cFS/issues/952 | issue-tracking |
| https://github.com/nasa/cFS/ | product |
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.