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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://cert.pl/en/posts/2026/07/CVE-2026-40467	Third Party Advisory
https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=cca0366144336b49aaa7d5d949966ce8e2c70843	Patch

Configurations

Configuration 1 (hide)

cpe:2.3:a:fossies:gawk:*:*:*:*:*:*:*:*

History

14 Jul 2026, 01:10

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
CPE		cpe:2.3:a:fossies:gawk::::::::
First Time		Fossies Fossies gawk
References	~~() https://cert.pl/en/posts/2026/07/CVE-2026-40467 -~~	() https://cert.pl/en/posts/2026/07/CVE-2026-40467 - Third Party Advisory
References	~~() https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=cca0366144336b49aaa7d5d949966ce8e2c70843 -~~	() https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=cca0366144336b49aaa7d5d949966ce8e2c70843 - Patch

13 Jul 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-13 13:16

Updated : 2026-07-14 01:10

NVD link : CVE-2026-40553

Mitre link : CVE-2026-40553

CVE.ORG link : CVE-2026-40553

JSON object : View

Products Affected

fossies

gawk

CWE

CWE-121

Stack-based Buffer Overflow

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