CVE-2026-40553

Buffer overflow vulnerability has been found in "extension/readdir.c" program file of gawk (ftype() routine). This issue could be used to crash the program and potentially to achieve code execution, although the latter has not been confirmed to be feasible. It affects gawk in versions 5.4.0 and below.

Score

CVSS 3.1 7.5 High

Status

Analyzed - cvd@cert.pl

Published

2026-07-13

Last modified

2026-10-24

Weaknesses

CWE-121

Affected products

• Gawk (Fossies)
• Gawk (Gnu)

References

• https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=cca0366144336b49aaa7d5d949966ce8e2c70843
• https://cert.pl/en/posts/2026/07/CVE-2026-40467