Common Weakness Enumeration

CWE-122

Allowed

Heap-based Buffer Overflow

Abstraction: Variant · Status: Draft

API response cwe.mitre.org

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().

4101 vulnerabilities reference this CWE, most recent first.

CVE-2026-35420 (GCVE-0-2026-35420)

Vulnerability from cvelistv5 – Published: 2026-05-12 16:58 – Updated: 2026-06-19 16:12
VLAI
Title
Windows Kernel Elevation of Privilege Vulnerability
Summary
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows Server 2012 Affected: 6.2.9200.0 , < 6.2.9200.26079 (custom)
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Microsoft Windows Server 2012 (Server Core installation) Affected: 6.2.9200.0 , < 6.2.9200.26079 (custom)
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Microsoft Windows Server 2012 R2 Affected: 6.3.9600.0 , < 6.3.9600.23181 (custom)
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Microsoft Windows Server 2012 R2 (Server Core installation) Affected: 6.3.9600.0 , < 6.3.9600.23181 (custom)
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Microsoft Windows Server 2016 Affected: 10.0.14393.0 , < 10.0.14393.9140 (custom)
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Microsoft Windows Server 2016 (Server Core installation) Affected: 10.0.14393.0 , < 10.0.14393.9140 (custom)
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Microsoft Windows Server 2019 Affected: 10.0.17763.0 , < 10.0.17763.8755 (custom)
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Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.17763.0 , < 10.0.17763.8755 (custom)
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Microsoft Windows Server 2022 Affected: 10.0.20348.0 , < 10.0.20348.5139 (custom)
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Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) Affected: 10.0.25398.0 , < 10.0.25398.2330 (custom)
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Microsoft Windows Server 2025 Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
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Microsoft Windows Server 2025 (Server Core installation) Affected: 10.0.26100.0 , < 10.0.26100.32860 (custom)
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Date Public
2026-05-12 14:00
Show details on NVD website
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CVE-2026-35199 (GCVE-0-2026-35199)

Vulnerability from cvelistv5 – Published: 2026-04-06 19:44 – Updated: 2026-04-07 15:10
VLAI
Title
SymCrypt SymCryptXmssSign function - Heap overflow via 64->32-bit leaf-count truncation
Summary
SymCrypt is the core cryptographic function library currently used by Windows. From 103.5.0 to before 103.11.0, The SymCryptXmssSign function passes a 64-bit leaf count value to a helper function that accepts a 32-bit parameter. For XMSS^MT parameter sets with total tree height >= 32 (which includes standard predefined parameters), this causes silent truncation to zero, resulting in a drastically undersized scratch buffer allocation followed by a heap buffer overflow during signature computation. Exploiting this issue would require an application using SymCrypt to perform an XMSS^MT signature using an attacker-controlled parameter set. It is uncommon for applications to allow the use of attacker-controlled parameter sets for signing, since signing is a private key operation, and private keys must be trusted by definition. Additionally, XMSS(^MT) signing should only be performed in a Hardware Security Module (HSM). XMSS(^MT) signing is provided in SymCrypt only for testing purposes. This is a general rule irrespective of this CVE; XMSS(^MT) and other stateful signature schemes are only cryptographically secure when it is guaranteed that the same state cannot be reused for two different signatures, which cannot be guaranteed by software alone. For this reason, XMSS(^MT) signing is also not FIPS approved when performed outside of an HSM. Fixed in version 103.11.0.
Severity
6.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
microsoft SymCrypt Affected: >= 103.5.0, < 103.11.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-34979 (GCVE-0-2026-34979)

Vulnerability from cvelistv5 – Published: 2026-04-03 21:16 – Updated: 2026-04-07 14:19
VLAI
Title
OpenPrinting CUPS: Heap overflow in `get_options()`
Summary
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
OpenPrinting cups Affected: <= 2.4.16
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-34865 (GCVE-0-2026-34865)

Vulnerability from cvelistv5 – Published: 2026-04-13 06:02 – Updated: 2026-04-13 13:08
VLAI
Summary
Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.
Severity
10 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based buffer overflow
Assigner
References
Impacted products
Vendor Product Version
Huawei HarmonyOS Affected: 6.0.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-34743 (GCVE-0-2026-34743)

Vulnerability from cvelistv5 – Published: 2026-04-02 18:36 – Updated: 2026-04-03 12:59
VLAI
Title
XZ Utils: Buffer overflow in lzma_index_append()
Summary
XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to decode an Index that contained no Records, the resulting lzma_index was left in a state where where a subsequent lzma_index_append() would allocate too little memory, and a buffer overflow would occur. This issue has been patched in version 5.8.3.
Severity
1.7 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
tukaani-project xz Affected: < 5.8.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-34707 (GCVE-0-2026-34707)

Vulnerability from cvelistv5 – Published: 2026-06-09 17:49 – Updated: 2026-06-10 03:59
VLAI
Title
InCopy | Heap-based Buffer Overflow (CWE-122)
Summary
InCopy versions 21.3, 20.5.3 and earlier are 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)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow (CWE-122)
Assigner
References
Impacted products
Vendor Product Version
Adobe InCopy Affected: 0 , ≤ 20.5.3 (semver)
Create a notification for this product.
Date Public
2026-06-09 17:00
Show details on NVD website
To clipboard 

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CVE-2026-34701 (GCVE-0-2026-34701)

Vulnerability from cvelistv5 – Published: 2026-06-09 17:43 – Updated: 2026-06-10 10:08
VLAI
Title
InDesign Desktop | Heap-based Buffer Overflow (CWE-122)
Summary
InDesign Desktop versions 21.3, 20.5.3 and earlier are 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)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow (CWE-122)
Assigner
References
Impacted products
Vendor Product Version
Adobe InDesign Desktop Affected: 0 , ≤ 20.5.3 (semver)
Create a notification for this product.
Date Public
2026-06-09 17:00
Show details on NVD website
To clipboard 

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CVE-2026-34699 (GCVE-0-2026-34699)

Vulnerability from cvelistv5 – Published: 2026-06-09 17:43 – Updated: 2026-06-10 03:59
VLAI
Title
InDesign Desktop | Heap-based Buffer Overflow (CWE-122)
Summary
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Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow (CWE-122)
Assigner
References
Impacted products
Vendor Product Version
Adobe InDesign Desktop Affected: 0 , ≤ 20.5.3 (semver)
Create a notification for this product.
Date Public
2026-06-09 17:00
Show details on NVD website
To clipboard 

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CVE-2026-34698 (GCVE-0-2026-34698)

Vulnerability from cvelistv5 – Published: 2026-06-09 17:43 – Updated: 2026-06-10 03:59
VLAI
Title
InDesign Desktop | Heap-based Buffer Overflow (CWE-122)
Summary
InDesign Desktop versions 21.3, 20.5.3 and earlier are 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)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow (CWE-122)
Assigner
References
Impacted products
Vendor Product Version
Adobe InDesign Desktop Affected: 0 , ≤ 20.5.3 (semver)
Create a notification for this product.
Date Public
2026-06-09 17:00
Show details on NVD website
To clipboard 

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CVE-2026-34687 (GCVE-0-2026-34687)

Vulnerability from cvelistv5 – Published: 2026-05-12 17:49 – Updated: 2026-05-13 09:58
VLAI
Title
Illustrator | Heap-based Buffer Overflow (CWE-122)
Summary
Illustrator versions 29.8.6, 30.3 and earlier are 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)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow (CWE-122)
Assigner
References
Impacted products
Vendor Product Version
Adobe Illustrator Affected: 0 , ≤ 30.3 (semver)
Create a notification for this product.
Date Public
2026-05-12 17:00
Show details on NVD website
To clipboard 

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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.

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