CVE-2026-40469: gawk through 5.4.0 (inclusive), 0 through 5.4.0

CVE-2026-40469. CVSS 3.1 base score 9.1 (CRITICAL, NVD). EPSS 0.00213 (percentile 0.11119), scored 24-Oct-2026.

Affected technology

gawk · through 5.4.0 (inclusive)
fossies

gawk · 0 through 5.4.0
GNU

Component: Not specified by the source
Function: do_sub()
File: builtin.c

Attack conditions (Vendor/CNA, CVSS 4.0): Local · No privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 4.0 assessment (base score 5.1/10) rates confidentiality and integrity impact as none; availability impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 25-Oct-2026 01:29 UTC

CWE: CWE-190
CCR priority: 36.5 /100 (P4)
CVSS 3.1: 9.1 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H · NVD
EPSS: 0.00213 · percentile 0.11119 · 2026-10-24
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-25 01:28:19.133527+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-40469.html