{"id":"USN-8764-1","summary":"srt vulnerabilities","details":"It was discovered that SRT did not authenticate certain encryption control\nmessages. A remote attacker could possibly use this issue to downgrade an\nencrypted connection and inject arbitrary content or interrupt a media\nstream. (CVE-2026-55868)\n\nIt was discovered that SRT did not properly validate certain control\npackets during connection setup and key refresh operations. A remote\nattacker could possibly use this issue to cause SRT to crash, resulting in\na denial of service. (CVE-2026-55869)","modified":"2026-09-16T02:57:26.247975917Z","published":"2026-09-15T13:49:39Z","related":["UBUNTU-CVE-2026-55868","UBUNTU-CVE-2026-55869"],"upstream":["CVE-2026-55868","CVE-2026-55869","UBUNTU-CVE-2026-55868","UBUNTU-CVE-2026-55869"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8764-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-55868"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-55869"}],"affected":[{"package":{"name":"srt","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/srt?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.0-1ubuntu0.1~esm1"}]}],"versions":["1.3.2-1","1.4.0-1","1.4.0-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libsrt1","binary_version":"1.4.0-1ubuntu0.1~esm1"},{"binary_version":"1.4.0-1ubuntu0.1~esm1","binary_name":"srt-tools"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"severity":[{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-55868"},{"id":"CVE-2026-55869","severity":[{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8764-1.json"}},{"package":{"name":"srt","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/srt?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.4-4ubuntu0.1~esm1"}]}],"versions":["1.4.2-1.4","1.4.2-1.4ubuntu1","1.4.4-4"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"libsrt1.4-gnutls","binary_version":"1.4.4-4ubuntu0.1~esm1"},{"binary_name":"libsrt1.4-openssl","binary_version":"1.4.4-4ubuntu0.1~esm1"},{"binary_name":"srt-tools","binary_version":"1.4.4-4ubuntu0.1~esm1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:22.04:LTS","cves":[{"severity":[{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-55868"},{"id":"CVE-2026-55869","severity":[{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8764-1.json"}},{"package":{"name":"srt","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/srt?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.3-1ubuntu0.1~esm1"}]}],"versions":["1.5.2-1","1.5.3-1","1.5.3-1build1","1.5.3-1build2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"1.5.3-1ubuntu0.1~esm1","binary_name":"libsrt1.5-gnutls"},{"binary_version":"1.5.3-1ubuntu0.1~esm1","binary_name":"libsrt1.5-openssl"},{"binary_version":"1.5.3-1ubuntu0.1~esm1","binary_name":"srt-tools"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2026-55868","severity":[{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-55869","severity":[{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:24.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8764-1.json"}},{"package":{"name":"srt","ecosystem":"Ubuntu:Pro:26.04:LTS","purl":"pkg:deb/ubuntu/srt?arch=source&distro=esm-apps%2Fresolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.4-3ubuntu0.1~esm1"}]}],"versions":["1.5.4-1","1.5.4-3"],"ecosystem_specific":{"binaries":[{"binary_name":"libsrt1.5-gnutls","binary_version":"1.5.4-3ubuntu0.1~esm1"},{"binary_name":"libsrt1.5-openssl","binary_version":"1.5.4-3ubuntu0.1~esm1"},{"binary_name":"srt-tools","binary_version":"1.5.4-3ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8764-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:26.04:LTS","cves":[{"id":"CVE-2026-55868","severity":[{"type":"Ubuntu","score":"medium"}]},{"severity":[{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-55869"}]}}}],"schema_version":"1.9.0"}