CVE-2026-40553

Name
CVE-2026-40553
Description
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

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

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:fossies:gawk:*:*:*:*:*:*:*:* gawk >= None <= 5.4.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
gawk edge-main 5.3.2-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gawk edge-main 5.3.2-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gawk edge-main 5.3.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gawk edge-main 5.3.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gawk 3.24-main 5.3.2-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gawk 3.23-main 5.3.2-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gawk 3.22-main 5.3.2-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gawk 3.21-main 5.3.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gawk 3.20-main 5.3.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gawk 3.19-main 5.3.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable