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().

4113 vulnerabilities reference this CWE, most recent first.

CVE-2026-15449 (GCVE-0-2026-15449)

Vulnerability from cvelistv5 – Published: 2026-07-16 19:27 – Updated: 2026-07-17 12:42
VLAI
Title
TOCTOU double copyin in illumos dld ioctl handling causes kernel heap corruption
Summary
A time-of-check to time-of-use (TOCTOU) flaw in the illumos data-link pseudo-driver (dld) affects handling of the DLDIOC_GETMACPROP and DLDIOC_SETMACPROP ioctls on /dev/dld. drv_ioc_prop_common() in usr/src/uts/common/io/dld/dld_drv.c copies the dld_ioc_macprop_t ioctl header in once to read its pr_valsize field, sizes and allocates a kernel heap buffer from that value, and then copies the full request in a second time from the same unprivileged user address. A concurrent thread can enlarge pr_valsize between the two copyins, so the second copyin and the subsequent property handling write beyond the end of the undersized allocation and corrupt the kernel heap. An unprivileged local user, including one confined to a non-global zone that owns a datalink, can trigger this to panic the system. The resulting kernel heap corruption may be usable for further compromise.
Severity
5.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
illumos illumos-gate Affected: eae72b5b807baa9116e64502cbb278edf15f3146 , < 6959feb5b430411a4809b06c53dcdb42fb525eac (git)
Create a notification for this product.
OmniOS OmniOS Affected: any , < r151054 (custom)
Affected: r151058 , < r151058j (custom)
Affected: r151056 , < r151056aj (custom)
Affected: r151054 , < r151054bj (custom)
Create a notification for this product.
Triton Data Center SmartOS Affected: any , < 202060709 (custom)
Create a notification for this product.
Date Public
2026-07-08 19:00
Credits
Nick Wilkens of Edgecast Cloud Dan McDonald
Show details on NVD website
To clipboard 

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CVE-2026-15422 (GCVE-0-2026-15422)

Vulnerability from cvelistv5 – Published: 2026-07-16 19:29 – Updated: 2026-07-17 13:47
VLAI
Title
SCTP needs to better-check INIT ACK chunk parameters
Summary
The illumos SCTP inbound path performs association lookup for INIT ACK chunks without adequately validating the address parameters carried in the chunk. Since this lookup runs during packet classification (i.e. before SCTP integrity checks or IPsec policy are applied) a remote, unauthenticated attacker can send a crafted SCTP INIT ACK packet with malformed address parameters to cause an out-of-bounds access and kernel heap corruption, which may lead to remote code execution. The flaw has existed since 2010 (illumos-gate commit a5407c02), and affects any illumos distribution prior to illumos-gate commit 53a3efde.
Severity
9.1 (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/E:U/S:P/AU:Y/R:U/V:C/RE:H/U:Red
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
illumos illumos-gate Affected: a5407c02d5ed61b29481b9b71f1307d7ebec9e5c , < 53a3efdeff8e6745bbfb69c5360f94962fb79e75 (git)
Create a notification for this product.
OmniOS OmniOS Affected: r151058 , < r151058j (custom)
Affected: r151056 , < r151056aj (custom)
Affected: r151054 , < r151054bj (custom)
Affected: any , < r151054 (custom)
Create a notification for this product.
Triton Data Center SmartOS Affected: any , < 202060709 (custom)
Create a notification for this product.
Date Public
2026-07-08 18:00
Credits
Sourque Dan McDonald
Show details on NVD website
To clipboard 

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CVE-2026-15182 (GCVE-0-2026-15182)

Vulnerability from cvelistv5 – Published: 2026-07-09 11:30 – Updated: 2026-07-09 17:45 X_Open Source
VLAI
Title
GNU LibreDWG BMP Image dwg.c dwg_bmp heap-based overflow
Summary
A vulnerability has been found in GNU LibreDWG up to 0.13.4. The affected element is the function dwg_bmp of the file src/dwg.c of the component BMP Image Handler. Such manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. Upgrading to version 0.14 is sufficient to fix this issue. The name of the patch is 18fd542bb4d5ccedf9de12052bf50068b2b26f06. It is suggested to upgrade the affected component.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
5.3 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
GNU LibreDWG Affected: 0.13.0
Affected: 0.13.1
Affected: 0.13.2
Affected: 0.13.3
Affected: 0.13.4
Unaffected: 0.14
    cpe:2.3:a:gnu:libredwg:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Ech06 (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-15174 (GCVE-0-2026-15174)

Vulnerability from cvelistv5 – Published: 2026-07-08 20:51 – Updated: 2026-07-09 13:14
VLAI
Title
Heap-based Buffer Overflow in Wireshark
Summary
Catapult DCT2000 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Wireshark Foundation Wireshark Affected: 4.6.0 , < 4.6.7 (semver)
Affected: 4.4.0 , < 4.4.17 (semver)
Create a notification for this product.
Credits
Michael Bommarito
Show details on NVD website
To clipboard 

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CVE-2026-15173 (GCVE-0-2026-15173)

Vulnerability from cvelistv5 – Published: 2026-07-08 20:51 – Updated: 2026-07-09 13:44
VLAI
Title
Heap-based Buffer Overflow in Wireshark
Summary
pcapng file parser crash in Wireshark 4.6.0 to 4.6.6 allows denial of service
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Wireshark Foundation Wireshark Affected: 4.6.0 , < 4.6.7 (semver)
Create a notification for this product.
Credits
Mitchell Benjamin
Show details on NVD website
To clipboard 

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CVE-2026-15170 (GCVE-0-2026-15170)

Vulnerability from cvelistv5 – Published: 2026-07-08 20:50 – Updated: 2026-07-09 13:46
VLAI
Title
Heap-based Buffer Overflow in Wireshark
Summary
Z39.50 protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Wireshark Foundation Wireshark Affected: 4.6.0 , < 4.6.7 (semver)
Affected: 4.4.0 , < 4.4.17 (semver)
Create a notification for this product.
Credits
Claude and Ada Logics
Show details on NVD website
To clipboard 

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CVE-2026-15169 (GCVE-0-2026-15169)

Vulnerability from cvelistv5 – Published: 2026-07-08 20:51 – Updated: 2026-07-09 13:45
VLAI
Title
Heap-based Buffer Overflow in Wireshark
Summary
UMTS FP protocol dissector crash in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Wireshark Foundation Wireshark Affected: 4.6.0 , < 4.6.7 (semver)
Affected: 4.4.0 , < 4.4.17 (semver)
Create a notification for this product.
Credits
Claude and Ada Logics
Show details on NVD website
To clipboard 

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CVE-2026-15165 (GCVE-0-2026-15165)

Vulnerability from cvelistv5 – Published: 2026-07-08 20:50 – Updated: 2026-07-09 13:47
VLAI
Title
Heap-based Buffer Overflow in Wireshark
Summary
TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Wireshark Foundation Wireshark Affected: 4.6.0 , < 4.6.7 (semver)
Create a notification for this product.
Credits
Claude and Ada Logics
Show details on NVD website
To clipboard 

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CVE-2026-15164 (GCVE-0-2026-15164)

Vulnerability from cvelistv5 – Published: 2026-07-08 20:50 – Updated: 2026-07-09 13:50
VLAI
Title
Heap-based Buffer Overflow in ciscodump
Summary
Crash in ciscodump 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows denial of service
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Wireshark Foundation ciscodump Affected: 4.6.0 , < 4.6.7 (semver)
Affected: 4.4.0 , < 4.4.17 (semver)
Create a notification for this product.
Credits
0sec and Doruk Tan Ozturk
Show details on NVD website
To clipboard 

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CVE-2026-14940 (GCVE-0-2026-14940)

Vulnerability from cvelistv5 – Published: 2026-07-07 13:54 – Updated: 2026-07-07 15:35
VLAI
Title
389-ds-base: 389-ds-base: heap-buffer-overflow in dn normalization via quoted multivalued rdn
Summary
A heap-buffer-overflow flaw was found in 389 Directory Server (389-ds-base). When normalizing a Distinguished Name (DN) that contains a legacy-quoted value encoding a multivalued nested Relative Distinguished Name (RDN), the server can write past the end of a heap allocation while sorting RDN attribute-value pairs. An unauthenticated remote attacker can trigger this condition by sending an LDAP operation whose DN reaches the DN normalization routine, such as a search with a crafted base DN. This can corrupt heap memory and may cause denial of service.
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: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-14940 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2497697 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-07-07 12:01
Credits
Red Hat would like to thank Denis Rastyogin (ALT Linux) for reporting this issue.
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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