{"affected":[{"product":"freeswitch","source":"CNA: GitHub_M","vendor":"signalwire","versions":[{"status":"affected","version":"< 1.11.2"}]},{"ecosystem":"c","packageName":"FreeSWITCH","product":"FreeSWITCH","source":"GitHub GHSA-8ghv-ccjr-4cx9","vendor":"","versions":[{"status":"affected","version":"<= 1.11.1","versionType":"GitHub advisory range"}]}],"cveId":"CVE-2026-116789","cwes":["CWE-295","CWE-300"],"description":"FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.2, dtls_state_setup() compared a peer certificate with the SDP a=fingerprint only when FreeSWITCH was the DTLS client, not when it held the DTLS server role. An unauthenticated peer able to reach the negotiated media port could complete the DTLS-SRTP handshake with an unrelated certificate, obtain the leg's SRTP keys, decrypt and inject media, and displace the legitimate endpoint; on ICE-enabled legs the peer also needs the connectivity-check credentials from SDP, which generally requires signaling visibility or a position on its path. WebRTC and SIP DTLS-SRTP legs are affected whenever the peer selects the active role, while FreeSWITCH client-role handshakes already perform fingerprint validation. Version 1.11.2 introduces the remediation, which requires rtp_dtls_client_cert_verify_mode=fingerprint.","epss":{"date":"2026-11-09","percentile":0.07477,"score":0.00179},"exploits":[],"kev":null,"metrics":[{"score":7.4,"severity":"high","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},{"score":7.4,"severity":"high","source":"NVD: security-advisories@github.com","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}],"modifiedAt":1794266233243,"publishedAt":1793906957061,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/signalwire/freeswitch/security/advisories/GHSA-8ghv-ccjr-4cx9"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/signalwire/freeswitch/commit/ea74c0acb8b85c5fc50158cd592a1b80c4edf6a6"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/signalwire/freeswitch/releases/tag/v1.11.2"},{"source":"security-advisories@github.com","tags":[],"url":"https://github.com/signalwire/freeswitch/commit/ea74c0acb8b85c5fc50158cd592a1b80c4edf6a6"},{"source":"security-advisories@github.com","tags":[],"url":"https://github.com/signalwire/freeswitch/releases/tag/v1.11.2"},{"source":"security-advisories@github.com","tags":[],"url":"https://github.com/signalwire/freeswitch/security/advisories/GHSA-8ghv-ccjr-4cx9"},{"source":"GitHub Security Advisories","tags":["advisory"],"url":"https://github.com/signalwire/freeswitch/security/advisories/GHSA-8ghv-ccjr-4cx9"}],"remediation":[{"kind":"fix","source":"GitHub GHSA-8ghv-ccjr-4cx9","text":"FreeSWITCH (c): GitHub reports patched versions >= 1.11.2. Check the advisory for the affected release branch.","url":"https://github.com/signalwire/freeswitch/security/advisories/GHSA-8ghv-ccjr-4cx9"}],"revision":"d34f8f1f46ab4bbbf481519f8736894f94212dab927da7e68a40fcde7c00c437","sources":[{"modifiedAt":1794264216292,"name":"CNA: GitHub_M","retrievedAt":1794265726120,"url":"https://www.cve.org/CVERecord?id=CVE-2026-116789"},{"modifiedAt":1794266233243,"name":"NVD","retrievedAt":1794269907680,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116789"},{"modifiedAt":1793206474000,"name":"GitHub Security Advisories","retrievedAt":1794081910813,"url":"https://github.com/signalwire/freeswitch/security/advisories/GHSA-8ghv-ccjr-4cx9"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794265728261,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-116789"}],"ssvc":{"assessedAt":1794264205863,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"FreeSWITCH: DTLS-SRTP peer certificate is not bound to the SDP fingerprint when FreeSWITCH is the DTLS server","updatedAt":1794269907680}