{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40469","assignerOrgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","state":"PUBLISHED","assignerShortName":"CERT-PL","dateReserved":"2026-04-13T14:44:55.647Z","datePublished":"2026-07-13T12:07:55.692Z","dateUpdated":"2026-07-13T13:01:07.290Z"},"containers":{"cna":{"providerMetadata":{"orgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","shortName":"CERT-PL","dateUpdated":"2026-07-13T12:11:20.963Z"},"title":"Heap buffer overflow in gawk","datePublic":"2026-07-13T12:07:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-190","description":"CWE-190 Integer Overflow or Wraparound","type":"CWE"}]}],"affected":[{"vendor":"GNU","product":"gawk","platforms":["32 bit"],"repo":"https://cgit.git.savannah.gnu.org/cgit/gawk.git/","programFiles":["builtin.c"],"programRoutines":[{"name":"do_sub()"}],"versions":[{"status":"affected","version":"0","lessThanOrEqual":"5.4.0","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"Integer overflow vulnerability has been found in \"<span>builtin.c</span>\" program file of gawk (do_sub() <span>routine)</span>. <span>This issue could be used to overwrite gawk heap metadata and objects causing the program to crash. It affects</span>&nbsp;32-bit builds of gawk in versions 5.4.0 and below.<br>"}]}],"tags":["x_open-source"],"references":[{"url":"https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=ae1b2d508f46913269a9e62aceda3636afe8147b","tags":["patch"]},{"url":"https://cert.pl/en/posts/2026/07/CVE-2026-40467","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":5.1,"vectorString":"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"}}],"credits":[{"lang":"en","value":"Michał Majchrowicz (AFINE)","type":"finder"},{"lang":"en","value":"Marcin Wyczechowski (AFINE)","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-13T13:00:59.533242Z","id":"CVE-2026-40469","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-13T13:01:07.290Z"}}]}}