Name: CVE-2026-40469: Integer Overflow or Wraparound
Creator: Rapid7
Published: 2026-07-13T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-40469, CWE-190, CVSS 9.1, EPSS 0.00213

Integer overflow vulnerability has been found in "builtin.c" program file of gawk (do_sub() routine). This issue could be used to overwrite gawk heap metadata and objects causing the program to crash. It affects 32-bit builds of gawk in versions 5.4.0 and below.

CVSS Details

CVSS 4.0 Base Score: 5.1 (MEDIUM)
CVSS 4.0 Vector: (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 9.1
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Redhat_linux	—	No solution exists	Jul 20, 2026	Jul 13, 2026
Ubuntu	—	Upgrade gawk (Ubuntu Pro)Upgrade gawk	Jul 23, 2026	Jul 22, 2026
Vmware Photon_os	—	Use 'tdnf update' to upgrade all packages to the latest version.	Jul 31, 2026	Jul 13, 2026

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CVSS Details

Covered by Rapid7

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