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

14 Jul 2026, 01:12

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.1
CPE		cpe:2.3:a:fossies:gawk::::::::
First Time		Fossies Fossies gawk
References	~~() https://cert.pl/en/posts/2026/07/CVE-2026-40467 -~~	() https://cert.pl/en/posts/2026/07/CVE-2026-40467 - Third Party Advisory
References	~~() https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=062f2f2581b991362c046f7f2e238ffa34e6f8c7 -~~	() https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=062f2f2581b991362c046f7f2e238ffa34e6f8c7 - Patch

13 Jul 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-13 13:16

Updated : 2026-07-14 01:12

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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