CVE-2026-40467mediumCWE-416

CVE-2026-40467: medium-severity vulnerability in GNU gawk

Use after free in gawk

Published

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.1epss 0.2%
Use After Free vulnerability has been found in "io.c" program file of gawk (do_getline_redir() routine). This issue may lead to a crash. It affects gawk in versions 5.4.0 and below.
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
Affected products
GNU · gawk
Related CVEs — GNU gawk

In the same product, most dangerous first.

CVE-2026-40553MEDIUMStack-based buffer overflow in gawkEPSS 0.3%CVE-2026-40469MEDIUMHeap buffer overflow in gawkEPSS 0.2%CVE-2026-40468LOWHeap buffer overflow in gawkEPSS 0.2%