CVE-2026-40467

UNKNOWN 0.0

Use after free in gawk

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-416
Vendor	gnu
Product	gawk
Published	Jul 13, 2026
Last Updated	Jul 13, 2026

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Affected Versions

GNU / gawk

0 ≤ 5.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

cgit.git.savannah.gnu.org: https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=a2d18c74109e41bec29a23098eba2e00057286d8 cert.pl: https://cert.pl/en/posts/2026/07/CVE-2026-40467

Credits

Michał Majchrowicz (AFINE) Marcin Wyczechowski (AFINE)