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Critical 9.1Published Jul 13, 2026
CVE-2026-40469Integer overflow vulnerability has been found in "builtin.c" program file of gawk (do_sub() routine).
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 9.1 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- Weakness (CWE)
- CWE-190
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
fossies gawk fossies:gawk | through 5.4.0 | NVD |
References
- https://cert.pl/en/posts/2026/07/CVE-2026-40467third-party-advisory
- https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=ae1b2d508f46913269a9e62aceda3636afe8147bpatch
The CVE record on cve.org NVD's entry
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