PT-2026-57815 · Gnu · Gawk

Marcin Wyczechowski + 1 · Published 2026-07-13 · Updated 2026-07-13 · CVE-2026-40553

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions gawk versions 5.4.0 and earlier

Description A buffer overflow occurs in the ftype() routine within the extension/readdir.c file. This flaw can lead to a program crash and potentially allow for arbitrary code execution.

Recommendations Update gawk to a version later than 5.4.0. As a temporary mitigation, restrict the use of the ftype() routine in extension/readdir.c until the update is applied.

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-40553

Affected Products

Gawk

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-40553 · Security Note
• https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=cca0366144336b49aaa7d5d949966ce8e2c70843 · Patch
• https://twitter.com/CVEnew/status/2076722753592311835 · Twitter Post
• https://twitter.com/infoflowcloud/status/2076723681754075356 · Twitter Post
• https://cert.pl/en/posts/2026/07/CVE-2026-40467 · Note
• https://twitter.com/VulmonFeeds/status/2076749945755816220 · Twitter Post