{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-39863","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-07T19:13:20.379Z","datePublished":"2026-04-08T19:55:56.632Z","dateUpdated":"2026-04-09T13:52:38.030Z"},"containers":{"cna":{"title":"Kamailio Core: TCP Data Processing Vulnerability","problemTypes":[{"descriptions":[{"cweId":"CWE-119","lang":"en","description":"CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/kamailio/kamailio/security/advisories/GHSA-2wj4-f825-2h2f","tags":["x_refsource_CONFIRM"],"url":"https://github.com/kamailio/kamailio/security/advisories/GHSA-2wj4-f825-2h2f"}],"affected":[{"vendor":"kamailio","product":"kamailio","versions":[{"version":"< 5.8.8","status":"affected"},{"version":">= 6.0.0, < 6.0.6","status":"affected"},{"version":">= 6.1.0, < 6.1.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-04-08T19:55:56.632Z"},"descriptions":[{"lang":"en","value":"Kamailio is an open source implementation of a SIP Signaling Server. Prior to 6.1.1, 6.0.6, and 5.8.8, an out-of-bounds access in the core of Kamailio (formerly OpenSER and SER) allows remote attackers to cause a denial of service (process crash) via a specially crafted data packet sent over TCP. The issue impacts Kamailio instances having TCP or TLS listeners. This vulnerability is fixed in 5.1.1, 6.0.6, and 5.8.8."}],"source":{"advisory":"GHSA-2wj4-f825-2h2f","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-09T13:52:31.304154Z","id":"CVE-2026-39863","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":"2026-04-09T13:52:38.030Z"}}]}}