CVE-2026-40469

Public on 2026-07-13

Modified on 2026-07-14

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.

Severity

Medium

See what this means

CVSS v3 Base Score

4.0

See breakdown

Affected Packages

Platform	Package	Release Date	Advisory	Status
Amazon Linux 2 - Core	gawk			Not Affected
Amazon Linux 2023	gawk			Not Affected

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	4.0	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD	CVSSv3	9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-40469 Mitre: CVE-2026-40469