CVE•Published 2026-07-13•Modified 2026-07-14•1 article on news•5 live references•NVD data
CVE-2026-40468Fossies · 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. This issue may lead to memory exhaustion on the hosting operating system and could be used to overwrite gawk heap metadata and objects with attacker-controlled bytes. It affects 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-2026-40468Hosts 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-2026-40468Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-40468Censys host search filtered to this CVE id.
grep.app
CVE-2026-40468Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-40468GitHub code search for direct mentions.
Google dork
"CVE-2026-40468" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.