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().
4149 vulnerabilities reference this CWE, most recent first.
CVE-2023-6992 (GCVE-0-2023-6992)
Vulnerability from cvelistv5 – Published: 2024-01-04 11:11 – Updated: 2024-09-06 18:16
VLAI
EPSS
VEX
Title
Memory corruption issues is Cloudflare zlib implementation
Summary
Cloudflare version of zlib library was found to be vulnerable to memory corruption issues affecting the deflation algorithm implementation (deflate.c). The issues resulted from improper input validation and heap-based buffer overflow.
A local attacker could exploit the problem during compression using a crafted malicious file potentially leading to denial of service of the software.
Patches: The issue has been patched in commit 8352d10 https://github.com/cloudflare/zlib/commit/8352d108c05db1bdc5ac3bdf834dad641694c13c . The upstream repository is not affected.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/cloudflare/zlib | product |
| https://github.com/cloudflare/zlib/security/advis… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cloudflare | zlib |
Affected:
0 , < 8352d10
(git)
|
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CVE-2023-6779 (GCVE-0-2023-6779)
Vulnerability from cvelistv5 – Published: 2024-01-31 14:07 – Updated: 2026-07-14 12:03
VLAI
EPSS
VEX
Title
Glibc: off-by-one heap-based buffer overflow in __vsyslog_internal()
Summary
An off-by-one heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a message bigger than INT_MAX bytes, leading to an incorrect calculation of the buffer size to store the message, resulting in an application crash. This issue affects glibc 2.37 and newer.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
11 references
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | glibc |
Unaffected:
2.39
|
|
| 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 |
|
| Fedora | Fedora | ||
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
Date Public
2024-01-30 00:00
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CVE-2023-6349 (GCVE-0-2023-6349)
Vulnerability from cvelistv5 – Published: 2024-05-27 11:26 – Updated: 2024-08-02 08:28
VLAI
EPSS
VEX
Title
Heap overflow in libvpx
Summary
A heap overflow vulnerability exists in libvpx - Encoding a frame that has larger dimensions than the originally configured size with VP9 may result in a heap overflow in libvpx.
We recommend upgrading to version 1.13.1 or above
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://crbug.com/webm/1642 |
Impacted products
Date Public
2023-10-15 10:00
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CVE-2023-6246 (GCVE-0-2023-6246)
Vulnerability from cvelistv5 – Published: 2024-01-31 14:06 – Updated: 2026-07-14 12:03
VLAI
EPSS
VEX
Title
Glibc: heap-based buffer overflow in __vsyslog_internal()
Summary
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Severity
8.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
13 references
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | glibc |
Unaffected:
2.39
|
|
| 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 |
|
| Fedora | Fedora | ||
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
Date Public
2024-01-30 00:00
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CVE-2023-5908 (GCVE-0-2023-5908)
Vulnerability from cvelistv5 – Published: 2023-11-30 22:03 – Updated: 2024-08-02 08:14
VLAI
EPSS
VEX
Title
Heap Based Buffer Overflow in PTC KEPServerEx
Summary
KEPServerEX is vulnerable to a buffer overflow which may allow an attacker to crash the product being accessed or leak information.
Severity
9.1 (Critical)
CWE
- CWE-122 - Heap-Based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| PTC | KEPServerEX |
Affected:
0 , ≤ 6.14.263.0
(custom)
|
|
| PTC | ThingWorx Kepware Server |
Affected:
0 , ≤ 6.14.263.0
(custom)
|
|
| PTC | ThingWorx Industrial Connectivity |
Affected:
All versions
|
|
| PTC | OPC-Aggregator |
Affected:
0 , ≤ 6.14
(custom)
|
|
| PTC | ThingWorx Kepware Edge |
Affected:
0 , ≤ 1.7
(custom)
|
|
| Rockwell Automation | KEPServer Enterprise |
Affected:
0 , ≤ 6.14.263.0
(custom)
|
|
| GE Gigital | Industrial Gateway Server |
Affected:
0 , ≤ 7.614
(custom)
|
|
| Software Toolbox | TOP Server |
Affected:
0 , ≤ 6.14.263.0
(custom)
|
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CVE-2023-5841 (GCVE-0-2023-5841)
Vulnerability from cvelistv5 – Published: 2024-02-01 18:28 – Updated: 2025-11-04 16:10
VLAI
EPSS
VEX
Title
OpenEXR Heap Overflow in Scanline Deep Data Parsing
Summary
Due to a failure in validating the number of scanline samples of a OpenEXR file containing deep scanline data, Academy Software Foundation OpenEX image parsing library version 3.2.1 and prior is susceptible to a heap-based buffer overflow vulnerability. This issue was resolved as of versions v3.2.2 and v3.1.12 of the affected library.
Severity
9.1 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Academy Software Foundation | OpenEXR |
Affected:
0 , ≤ 3.2.1
(semver)
Unaffected: 3.2.2 Unaffected: 3.1.12 |
Date Public
2024-01-31 22:35
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CVE-2023-5686 (GCVE-0-2023-5686)
Vulnerability from cvelistv5 – Published: 2023-10-20 16:22 – Updated: 2025-02-13 17:25
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in radareorg/radare2
Summary
Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.
Severity
5.1 (Medium)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| radareorg | radareorg/radare2 |
Affected:
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CVE-2023-5568 (GCVE-0-2023-5568)
Vulnerability from cvelistv5 – Published: 2023-10-24 21:56 – Updated: 2025-09-02 15:43
VLAI
EPSS
VEX
Title
Samba: heap buffer overflow with freshness tokens in the heimdal kdc
Summary
A heap-based Buffer Overflow flaw was discovered in Samba. It could allow a remote, authenticated attacker to exploit this vulnerability to cause a denial of service.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-5568 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2245174 | issue-trackingx_refsource_REDHAT |
| https://bugzilla.samba.org/show_bug.cgi?id=15491 | |
| https://www.samba.org/samba/history/samba-4.19.2.html | |
| https://security.netapp.com/advisory/ntap-2023112… | x_transferred |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| 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 Storage 3 |
cpe:/a:redhat:storage:3 |
Date Public
2023-10-09 00:00
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CVE-2023-5460 (GCVE-0-2023-5460)
Vulnerability from cvelistv5 – Published: 2023-10-09 19:00 – Updated: 2024-08-02 07:59
VLAI
EPSS
VEX
Title
Delta Electronics WPLSoft Modbus Data Packet heap-based overflow
Summary
A vulnerability was found in Delta Electronics WPLSoft up to 2.51 and classified as problematic. This issue affects some unknown processing of the component Modbus Data Packet Handler. The manipulation leads to heap-based buffer overflow. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-241583. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Severity
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.241583 | vdb-entry |
| https://vuldb.com/?ctiid.241583 | signaturepermissions-required |
| https://drive.google.com/drive/folders/1oYxs_KxK4… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Delta Electronics | WPLSoft |
Affected:
2.0
Affected: 2.1 Affected: 2.2 Affected: 2.3 Affected: 2.4 Affected: 2.5 Affected: 2.6 Affected: 2.7 Affected: 2.8 Affected: 2.9 Affected: 2.10 Affected: 2.11 Affected: 2.12 Affected: 2.13 Affected: 2.14 Affected: 2.15 Affected: 2.16 Affected: 2.17 Affected: 2.18 Affected: 2.19 Affected: 2.20 Affected: 2.21 Affected: 2.22 Affected: 2.23 Affected: 2.24 Affected: 2.25 Affected: 2.26 Affected: 2.27 Affected: 2.28 Affected: 2.29 Affected: 2.30 Affected: 2.31 Affected: 2.32 Affected: 2.33 Affected: 2.34 Affected: 2.35 Affected: 2.36 Affected: 2.37 Affected: 2.38 Affected: 2.39 Affected: 2.40 Affected: 2.41 Affected: 2.42 Affected: 2.43 Affected: 2.44 Affected: 2.45 Affected: 2.46 Affected: 2.47 Affected: 2.48 Affected: 2.49 Affected: 2.50 Affected: 2.51 |
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CVE-2023-5404 (GCVE-0-2023-5404)
Vulnerability from cvelistv5 – Published: 2024-04-17 16:44 – Updated: 2024-08-02 07:59
VLAI
EPSS
VEX
Summary
Server receiving a malformed message can cause a pointer to be overwritten which can result in a remote code execution or failure. See Honeywell Security Notification for recommendations on upgrading and versioning.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://process.honeywell.com |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Honeywell | Experion Server |
Affected:
520.2 , ≤ 520.2 TCU4
(semver)
Affected: 510.1 , ≤ 510.2 HF13 (semver) Affected: 520.1 , ≤ 520.1 TCU4 (semver) Affected: 511.1 , ≤ 511.5 TCU4 HF3 (semver) |
|
| Honeywell | Experion Server |
Affected:
520.2 , ≤ 520.2 TCU4
(semver)
Affected: 511.1 , ≤ 511.5 TCU4 HF3 (semver) Affected: 520.1 , ≤ 520.1 TCU4 (semver) |
|
| Honeywell | Experion Server |
Affected:
520.2 , ≤ 520.2 TCU4
(semver)
Affected: 520.1 , ≤ 520.1 TCU4 (semver) Affected: 520.2 TCU4 HFR2 , ≤ 511.5 TCU4 HF3 (semver) |
|
| honeywell | experion_server |
Affected:
520.2, 510.1, 520.1, 511.1, 520.2, 511.1
cpe:2.3:a:honeywell:experion_server:*:*:*:*:*:*:*:* |
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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.