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().
4111 vulnerabilities reference this CWE, most recent first.
CVE-2026-2913 (GCVE-0-2026-2913)
Vulnerability from cvelistv5 – Published: 2026-02-22 04:02 – Updated: 2026-02-23 19:14 X_Open Source
VLAI
EPSS
VEX
Title
libvips source.c vips_source_read_to_memory heap-based overflow
Summary
A vulnerability was determined in libvips up to 8.19.0. The affected element is the function vips_source_read_to_memory of the file libvips/iofuncs/source.c. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The attack's complexity is rated as high. The exploitability is described as difficult. The exploit has been publicly disclosed and may be utilized. Patch name: a56feecbe9ed66521d9647ec9fbcd2546eccd7ee. Applying a patch is the recommended action to fix this issue. The confirmation of the bugfix mentions: "[T]he impact of this is negligible, since this only affects custom seekable sources larger than 4 GiB (and the crash occurs in user code rather than libvips itself)."
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.347222 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.347222 | signaturepermissions-required |
| https://vuldb.com/?submit.755224 | third-party-advisory |
| https://github.com/libvips/libvips/issues/4857 | issue-tracking |
| https://github.com/libvips/libvips/issues/4857#is… | issue-tracking |
| https://github.com/libvips/libvips/issues/4857#is… | exploitissue-tracking |
| https://github.com/libvips/libvips/commit/a56feec… | patch |
| https://github.com/libvips/libvips/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | libvips |
Affected:
8.0
Affected: 8.1 Affected: 8.2 Affected: 8.3 Affected: 8.4 Affected: 8.5 Affected: 8.6 Affected: 8.7 Affected: 8.8 Affected: 8.9 Affected: 8.10 Affected: 8.11 Affected: 8.12 Affected: 8.13 Affected: 8.14 Affected: 8.15 Affected: 8.16 Affected: 8.17 Affected: 8.18 Affected: 8.19.0 cpe:2.3:a:libvips:libvips:*:*:*:*:*:*:*:* |
Credits
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CVE-2026-2661 (GCVE-0-2026-2661)
Vulnerability from cvelistv5 – Published: 2026-02-18 19:02 – Updated: 2026-02-23 10:18
VLAI
EPSS
VEX
Title
Squirrel sqobject.h operator heap-based overflow
Summary
A security flaw has been discovered in Squirrel up to 3.2. This affects the function SQObjectPtr::operator in the library squirrel/sqobject.h. The manipulation results in heap-based buffer overflow. The attack needs to be approached locally. The exploit has been released to the public and may be used for attacks. 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 (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.346459 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.346459 | signaturepermissions-required |
| https://vuldb.com/?submit.753165 | third-party-advisory |
| https://github.com/albertodemichelis/squirrel/iss… | issue-tracking |
| https://github.com/oneafter/0122/blob/main/i310/repro | exploit |
Impacted products
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CVE-2026-2653 (GCVE-0-2026-2653)
Vulnerability from cvelistv5 – Published: 2026-02-18 11:02 – Updated: 2026-02-23 10:17
VLAI
EPSS
VEX
Title
admesh normals.c stl_check_normal_vector heap-based overflow
Summary
A security flaw has been discovered in admesh up to 0.98.5. This issue affects the function stl_check_normal_vector of the file src/normals.c. Performing a manipulation results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. It looks like this product is not really maintained anymore.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.346450 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.346450 | signaturepermissions-required |
| https://vuldb.com/?submit.752596 | third-party-advisory |
| https://github.com/admesh/admesh/issues/65 | issue-tracking |
| https://github.com/admesh/admesh/issues/65#issuec… | issue-tracking |
| https://github.com/user-attachments/files/2487827… | exploit |
| https://github.com/admesh/admesh/ | product |
Impacted products
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CVE-2026-2646 (GCVE-0-2026-2646)
Vulnerability from cvelistv5 – Published: 2026-03-19 17:25 – Updated: 2026-03-19 17:44
VLAI
EPSS
VEX
Title
Heap buffer overflow in session parsing with wolfSSL_d2i_SSL_SESSION() function
Summary
A heap-buffer-overflow vulnerability exists in wolfSSL's wolfSSL_d2i_SSL_SESSION() function. When deserializing session data with SESSION_CERTS enabled, certificate and session id lengths are read from an untrusted input without bounds validation, allowing an attacker to overflow fixed-size buffers and corrupt heap memory. A maliciously crafted session would need to be loaded from an external source to trigger this vulnerability. Internal sessions were not vulnerable.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
2 references
Credits
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CVE-2026-2597 (GCVE-0-2026-2597)
Vulnerability from cvelistv5 – Published: 2026-02-26 23:29 – Updated: 2026-02-27 18:50
VLAI
EPSS
VEX
Title
Crypt::SysRandom::XS versions before 0.010 for Perl is vulnerable to a heap buffer overflow in the XS function random_bytes()
Summary
Crypt::SysRandom::XS versions before 0.010 for Perl is vulnerable to a heap buffer overflow in the XS function random_bytes().
The function does not validate that the length parameter is non-negative. If a negative value (e.g. -1) is supplied, the expression length + 1u causes an integer wraparound, resulting in a zero-byte allocation. The subsequent call to chosen random function (e.g. getrandom) passes the original negative value, which is implicitly converted to a large unsigned value (typically SIZE_MAX). This can result in writes beyond the allocated buffer, leading to heap memory corruption and application crash (denial of service).
In common usage, the length argument is typically hardcoded by the caller, which reduces the likelihood of attacker-controlled exploitation. Applications that pass untrusted input to this parameter may be affected.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://metacpan.org/dist/Crypt-SysRandom-XS/changes | release-notes |
| https://metacpan.org/release/LEONT/Crypt-SysRando… | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| LEONT | Crypt::SysRandom::XS |
Affected:
0 , < 0.010
(custom)
|
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CVE-2026-2474 (GCVE-0-2026-2474)
Vulnerability from cvelistv5 – Published: 2026-02-16 20:54 – Updated: 2026-02-17 14:48
VLAI
EPSS
VEX
Title
Crypt::URandom versions from 0.41 before 0.55 for Perl is vulnerable to a heap buffer overflow in the XS function crypt_urandom_getrandom()
Summary
Crypt::URandom versions from 0.41 before 0.55 for Perl is vulnerable to a heap buffer overflow in the XS function crypt_urandom_getrandom().
The function does not validate that the length parameter is non-negative. If a negative value (e.g. -1) is supplied, the expression length + 1u causes an integer wraparound, resulting in a zero-byte allocation. The subsequent call to getrandom(data, length, GRND_NONBLOCK) passes the original negative value, which is implicitly converted to a large unsigned value (typically SIZE_MAX). This can result in writes beyond the allocated buffer, leading to heap memory corruption and application crash (denial of service).
In common usage, the length argument is typically hardcoded by the caller, which reduces the likelihood of attacker-controlled exploitation. Applications that pass untrusted input to this parameter may be affected.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://metacpan.org/release/DDICK/Crypt-URandom-… | release-notes |
| https://metacpan.org/release/DDICK/Crypt-URandom-… | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| DDICK | Crypt::URandom |
Affected:
0.41 , < 0.55
(custom)
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CVE-2026-2467 (GCVE-0-2026-2467)
Vulnerability from cvelistv5 – Published: 2026-06-17 17:17 – Updated: 2026-06-17 18:03
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Variables and Tags.
Summary
Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Variables and Tags.This issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.0.0 before 7.3.1.3, from 6.1.0 before 6.1.*, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*, from 5.0.0 before 5.2.*.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RTI | Connext Professional |
Affected:
7.4.0 , < 7.7.0
(custom)
Affected: 7.0.0 , < 7.3.1.3 (custom) Affected: 6.1.0 , < 6.1.* (custom) Affected: 6.0.0 , < 6.0.* (custom) Affected: 5.3.0 , < 5.3.* (custom) Affected: 5.0.0 , < 5.2.* (custom) |
Date Public
2026-06-12 16:21
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CVE-2026-2050 (GCVE-0-2026-2050)
Vulnerability from cvelistv5 – Published: 2026-06-24 21:43 – Updated: 2026-07-15 01:20
VLAI
EPSS
VEX
Title
GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Summary
GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of HDR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28266.
Severity
7.8 (High)
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_research-advisory |
| https://gitlab.gnome.org/GNOME/gegl/-/merge_reque… | vendor-advisory |
| https://access.redhat.com/security/cve/CVE-2026-2050 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2492593 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:38485 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:38497 | vendor-advisoryx_refsource_REDHAT |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| GIMP | GIMP |
Affected:
3.0.6
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:0.2.0-40.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:0.4.62-1.el9_8.1 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| 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 |
Date Public
2026-04-15 21:48
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CVE-2026-2049 (GCVE-0-2026-2049)
Vulnerability from cvelistv5 – Published: 2026-06-10 21:22 – Updated: 2026-07-15 01:20
VLAI
EPSS
VEX
Title
GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Summary
GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of HDR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28618.
Severity
7.8 (High)
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_research-advisory |
| https://gitlab.gnome.org/GNOME/gegl/-/issues/450 | vendor-advisory |
| https://access.redhat.com/security/cve/CVE-2026-2049 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2487738 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| GIMP | GIMP |
Affected:
3.2.0-RC1
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
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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 |
Date Public
2026-03-16 21:37
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CVE-2026-2047 (GCVE-0-2026-2047)
Vulnerability from cvelistv5 – Published: 2026-02-20 22:23 – Updated: 2026-07-15 01:20
VLAI
EPSS
VEX
Title
GIMP ICNS File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Summary
GIMP ICNS File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of ICNS files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28530.
Severity
7.8 (High)
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_research-advisory |
| https://gitlab.gnome.org/GNOME/gimp/-/merge_reque… | vendor-advisory |
| https://access.redhat.com/security/cve/CVE-2026-2047 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2441517 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:4173 | vendor-advisoryx_refsource_REDHAT |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| GIMP | GIMP |
Affected:
3.0.6
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
2:3.0.4-1.el9_7.4 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| 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 |
Date Public
2026-02-19 14:22
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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.