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.

Score

CVSS 3.1 9.1 Critical

Status

Analyzed - cvd@cert.pl

Published

2026-07-13

Last modified

2026-10-24

Weaknesses

CWE-190

Affected products

• Gawk (Fossies)
• Gawk (Gnu)

References

• https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=062f2f2581b991362c046f7f2e238ffa34e6f8c7
• https://cert.pl/en/posts/2026/07/CVE-2026-40467