{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-60109","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-07-08T13:27:53.030Z","datePublished":"2026-07-09T14:19:17.970Z","dateUpdated":"2026-07-09T18:17:23.735Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-07-09T14:19:17.970Z"},"title":"Zeek < 8.0.9 Null Pointer Dereference DoS via Kerberos KRB_ERROR Parsing","descriptions":[{"lang":"en","value":"Zeek before 8.0.9 contains a null pointer dereference vulnerability in its Kerberos protocol analyzer that allows unauthenticated remote attackers to crash the sensor by sending a crafted KRB_ERROR message with error-code 25 (KDC_ERR_PREAUTH_REQUIRED) containing a PA-DATA element with padata-type 2, 3, 11, or 19. Attackers can exploit a parser and analyzer state mismatch where proc_padata() dereferences an uninitialized pa_data_element field selected by the wrong parsing arm, triggering a crash via a single UDP or TCP packet to port 88 without any credentials or prior authentication."}],"tags":["x_open-source"],"datePublic":"2026-07-06T00:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-476","description":"NULL Pointer Dereference","type":"CWE"}]}],"affected":[{"defaultStatus":"affected","vendor":"zeek","product":"zeek","repo":"https://github.com/zeek/zeek","versions":[{"status":"affected","version":"0","versionType":"semver","lessThan":"8.0.9"}]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","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":"HIGH","baseScore":8.7,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","version":"3.1","baseSeverity":"HIGH","baseScore":7.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}],"references":[{"url":"https://github.com/zeek/zeek/releases/tag/v8.0.9","name":"Release Notes","tags":["release-notes"]},{"url":"https://github.com/zeek/zeek/commit/c82e3c734893d932e94310aec0dbeb1ffcea169d","name":"Patch Commit","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/zeek-null-pointer-dereference-dos-via-kerberos-krb-error-parsing","tags":["third-party-advisory"]}],"credits":[{"lang":"en","value":"Jaime Sánchez Sánchez","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"vulncheck"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-09T18:17:17.788848Z","id":"CVE-2026-60109","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"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":"2026-07-09T18:17:23.735Z"}}]}}