{"api_version":"1","generated_at":"2026-04-23T07:00:09+00:00","cve":"CVE-2021-43804","urls":{"html":"https://cve.report/CVE-2021-43804","api":"https://cve.report/api/cve/CVE-2021-43804.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-43804","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-43804"},"summary":{"title":"CVE-2021-43804","description":"PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In affected versions if the incoming RTCP BYE message contains a reason's length, this declared length is not checked against the actual received packet size, potentially resulting in an out-of-bound read access. This issue affects all users that use PJMEDIA and RTCP. A malicious actor can send a RTCP BYE message with an invalid reason length. Users are advised to upgrade as soon as possible. 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When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}