{"id":"CVE-2026-54632","title":"SIPSorcery is a WebRTC, SIP, and VoIP library for C# and .NET","summary":"SIPSorcery is a WebRTC, SIP, and VoIP library for C# and .NET. Prior to 10.0.9, RTPChannel.OnRTPPacketReceived and the STUNAttribute.ParseMessageAttributes, STUNXORAddressAttribute, and STUNAddressAttribute parsing path index untrusted b…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-20","CWE-755"],"vendor":"sipsorcery-org","product":"sipsorcery","affected":["sipsorcery < 10.0.9"],"patched":["SIPSorcery 10.0.9"],"published":"2026-09-14","updated":"2026-09-15","sourceUpdated":"2026-09-15T15:17:18.310","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54632","references":[{"url":"https://github.com/sipsorcery-org/sipsorcery/commit/bdb76cbc0c7216e3126f743fb78e8525af56cea2","label":"security-advisories@github.com"},{"url":"https://github.com/sipsorcery-org/sipsorcery/pull/1677","label":"security-advisories@github.com"},{"url":"https://github.com/sipsorcery-org/sipsorcery/security/advisories/GHSA-28gm-jrmw-xx93","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-28gm-jrmw-xx93"}],"tags":["nvd","cve.org","ghsa","nuget"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-15T14:43:20.756790Z"},"epss":0.00718,"epssPercentile":0.51776,"aliases":["GHSA-28gm-jrmw-xx93"],"ecosystem":"nuget","ingestedAt":"2026-07-28T17:37:22.254Z","slug":"CVE-2026-54632","body":"## Overview\n\nSIPSorcery is a WebRTC, SIP, and VoIP library for C# and .NET. Prior to 10.0.9, RTPChannel.OnRTPPacketReceived and the STUNAttribute.ParseMessageAttributes, STUNXORAddressAttribute, and STUNAddressAttribute parsing path index untrusted bytes without sufficient length checks, while UdpReceiver.EndReceiveFrom closes the channel when those operations raise a non-socket exception. A remote party can send a single short RTP packet or malformed zero-to-seven-byte STUN address attribute to the shared RTP/ICE socket, including during ICE connectivity checks before DTLS or STUN MESSAGE-INTEGRITY verification, and terminate the active RTP or WebRTC media session. The attacker must reach or learn the advertised ephemeral RTP/ICE port, but no authentication or user interaction is required, and the impact is limited to availability. This issue is fixed in version 10.0.9.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-54632)\n\nAffected packages:\n\n- `SIPSorcery <= 10.0.8`\n\nPatched in:\n\n- `SIPSorcery 10.0.9`\n\nSource: https://github.com/advisories/GHSA-28gm-jrmw-xx93","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}