CVE-2026-40467 — HIGH (7.5)

Q: What is CVE-2026-40467?

CVE-2026-40467 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.

Q: How severe is CVE-2026-40467?

CVE-2026-40467 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-40467?

Check the references section above for vendor advisories and patch information. Affected products include: Fossies Gawk.

Vulnerability Description

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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Fossies	Gawk	<= 5.4.0

Related Weaknesses (CWE)

CWE-416

References

https://cert.pl/en/posts/2026/07/CVE-2026-40467Third Party Advisory
https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=a2d18c74109e41bec29a2Patch

FAQ

What is CVE-2026-40467?

CVE-2026-40467 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.

How severe is CVE-2026-40467?

CVE-2026-40467 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-40467?

Check the references section above for vendor advisories and patch information. Affected products include: Fossies Gawk.