CVE-2026-40469

Integer overflow vulnerability has been found in "builtin.c" program file of gawk (do_sub() routine). This issue could be used to overwrite gawk heap metadata and objects causing the program to crash. It affects 32-bit builds of gawk in versions 5.4.0 and below.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://cert.pl/en/posts/2026/07/CVE-2026-40467	Third Party Advisory
https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=ae1b2d508f46913269a9e62aceda3636afe8147b	Patch

Configurations

Configuration 1 (hide)

cpe:2.3:a:fossies:gawk:*:*:*:*:*:*:*:*

History

24 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Se ha encontrado una vulnerabilidad de desbordamiento de entero en el archivo de programa ’builtin.c’ de gawk (rutina do_sub()). Este problema podría usarse para sobrescribir metadatos y objetos del heap de gawk, causando que el programa falle. Afecta a las compilaciones de 32 bits de gawk en las versiones 5.4.0 e inferiores.

Information

Published : 2026-07-13 13:16

Updated : 2026-10-24 22:10

NVD link : CVE-2026-40469

Mitre link : CVE-2026-40469

CVE.ORG link : CVE-2026-40469

JSON object : View

Products Affected

fossies

gawk

CWE

CWE-190

Integer Overflow or Wraparound

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