CVE-2026-40468

Integer overflow vulnerability has been found in "builtin.c" program file of gawk. This issue may lead to memory exhaustion on the hosting operating system and could be used to overwrite gawk heap metadata and objects with attacker-controlled bytes. It affects 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=062f2f2581b991362c046f7f2e238ffa34e6f8c7	Patch

Configurations

Configuration 1 (hide)

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

History

24 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Vulnerabilidad de desbordamiento de entero ha sido encontrada en el archivo de programa ’builtin.c’ de gawk. Este problema puede llevar al agotamiento de la memoria en el sistema operativo anfitrión y podría ser usado para sobrescribir metadatos y objetos del heap de gawk con bytes controlados por el atacante. Afecta a 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-2026-40468

Mitre link : CVE-2026-40468

CVE.ORG link : CVE-2026-40468

JSON object : View

Products Affected

fossies

gawk

CWE

CWE-190

Integer Overflow or Wraparound

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