CVE•Published 2026-07-13•Modified 2026-07-14•1 article on news•5 live references•NVD data
CVE-2026-40469Fossies · Gawk
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
EPSS percentile
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Weaknesses (CWE)
Description
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.
Timeline
Published 2026-07-13
Modified 2026-07-14
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-40469Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Fossies Gawk"All exposed Fossies Gawk instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Gawk"HTTP body or banner mentions "Gawk" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-40469Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-40469Censys host search filtered to this CVE id.
grep.app
CVE-2026-40469Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-40469GitHub code search for direct mentions.
Google dork
"CVE-2026-40469" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.