CVE-2026-40469

Publication date 13 July 2026

Last updated 6 August 2026

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
gawk	26.04 LTS resolute	Fixed 1:5.3.2-1ubuntu1.1
	24.04 LTS noble	Fixed 1:5.2.1-2ubuntu0.1
	22.04 LTS jammy	Fixed 1:5.1.0-1ubuntu0.2
	20.04 LTS focal	Fixed 1:5.0.1+dfsg-1ubuntu0.1+esm1
	18.04 LTS bionic	Fixed 1:4.1.4+dfsg-1ubuntu0.1~esm2
	16.04 LTS xenial	Fixed 1:4.1.3+dfsg-0.1ubuntu0.1~esm2
	14.04 LTS trusty	Fixed 1:4.0.1+dfsg-2.1ubuntu2+esm2

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Severity score breakdown

CVSS version:

Base score 5.1 · Medium

Base metrics

Parameter	Value
Attack vector	Local
Attack complexity	Low
Attack requirements	None
Privileges required	None
User interaction	None
Vulnerable system - Confidentiality impact	None
Vulnerable system - Integrity impact	None
Vulnerable system - Availability impact	Low
Subsequent system - Confidentiality impact	None
Subsequent system - Integrity impact	None
Subsequent system - Availability impact	None

Scores

Parameter	Value
Base score	5.1 · Medium
Base + Threat score	-
Base + Environmental score	-
Base + Threat + Environmental score	-

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Base score 9.1 · Critical