Is CVE-2026-40468 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-40468?

CVE-2026-40468 has a CVSS v3 severity of CRITICAL (9.1).

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CVE-2026-40468

Description

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.