{"id":"CVE-2026-121392","aliases":["DEBIAN-CVE-2026-121392","EUVD-2026-115924","GHSA-j5xv-pp35-jwf5","GHSA-jq25-3374-4262","UBUNTU-CVE-2026-121392","USN-9007-1"],"status":"published","title":"FreeRDP before 3.32.2 Certificate Identity Validation Bypass via tls_verify_certificate","description":"FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tls_verify_certificate() that accepts Common Name fallback despite non-matching SAN entries and matches IP literals against DNS strings. Man-in-the-middle attackers holding a certificate from a client-trusted CA can bypass server identity checks to intercept RDP sessions, including keystrokes, clipboard, and screen content.","severity":{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00167,"percentile":0.06013,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-295"],"published":"2026-11-03T14:27:57Z","modified":"2026-11-10T02:58:34Z","fixes":[{"ecosystem":"Debian:14","package":"freerdp3","fixed_in":["3.32.2+dfsg-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"freerdp3","fixed_in":["3.32.2+dfsg-0ubuntu0.24.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.10","package":"freerdp3","fixed_in":["3.32.2+dfsg-0ubuntu0.26.10.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"freerdp3","fixed_in":["3.32.2+dfsg-0ubuntu0.26.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"freerdp2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0+dfsg1-1","2.10.0+dfsg1-1.1","2.11.2+dfsg1-1","2.11.2+dfsg1-1.1~exp1","2.11.2+dfsg1-1.1~exp2","2.11.5+dfsg1-1","2.11.7+dfsg1-1","2.11.7+dfsg1-2","2.11.7+dfsg1-3","2.11.7+dfsg1-4","2.11.7+dfsg1-5","2.11.7+dfsg1-6","2.11.7+dfsg1-6~deb12u1"]},{"source":"osv","ecosystem":"Debian:13","package":"freerdp3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.15.0+dfsg-2.1","3.15.0+dfsg-2.1+deb13u1","3.15.0+dfsg-2.1+deb13u2","3.15.0+dfsg-2.1+deb13u3","3.16.0+dfsg-1","3.16.0+dfsg-2","3.17.0+dfsg-1","3.17.1+dfsg-1","3.17.1+dfsg-2","3.17.2+dfsg-1","3.17.2+dfsg-2","3.17.2+dfsg-3","3.18.0+dfsg-1","3.19.0+dfsg-1","3.19.1+dfsg-1","3.20.0+dfsg-1","3.20.2+dfsg-1","3.21.0+dfsg-1","3.22.0+dfsg-1","3.22.0+dfsg-1~bpo13+0","3.22.0+dfsg-1~bpo13+1","3.22.0+dfsg-3","3.23.0+dfsg-1","3.23.0+dfsg-1~bpo13+1","3.24.0+dfsg-1","3.24.0+dfsg-2","3.24.1+dfsg-1","3.24.2+dfsg-1","3.24.2+dfsg-1~bpo13+1","3.25.0+dfsg-1","3.25.0+dfsg-2","3.25.0+dfsg-3","3.25.0+dfsg-4","3.25.0+dfsg-5","3.26.0+dfsg-1","3.26.0+dfsg-1~bpo13+1","3.27.0+dfsg-1","3.27.1+dfsg-1","3.28.0+dfsg-1","3.28.0+dfsg-2","3.29.0+dfsg-1","3.30.0+dfsg-1","3.30.0+dfsg-1~bpo13+1","3.31.0+dfsg-1","3.31.1+dfsg-1","3.31.1+dfsg-1~bpo13+1","3.32.0+dfsg-1","3.32.1+dfsg-1","3.32.1+dfsg-1~bpo13+1","3.32.2+dfsg-1","3.33.0+dfsg-1"]},{"source":"osv","ecosystem":"Debian:14","package":"freerdp3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.32.2+dfsg-1"}]}],"versions":["3.15.0+dfsg-2.1","3.16.0+dfsg-1","3.16.0+dfsg-2","3.17.0+dfsg-1","3.17.1+dfsg-1","3.17.1+dfsg-2","3.17.2+dfsg-1","3.17.2+dfsg-2","3.17.2+dfsg-3","3.18.0+dfsg-1","3.19.0+dfsg-1","3.19.1+dfsg-1","3.20.0+dfsg-1","3.20.2+dfsg-1","3.21.0+dfsg-1","3.22.0+dfsg-1","3.22.0+dfsg-1~bpo13+0","3.22.0+dfsg-1~bpo13+1","3.22.0+dfsg-3","3.23.0+dfsg-1","3.23.0+dfsg-1~bpo13+1","3.24.0+dfsg-1","3.24.0+dfsg-2","3.24.1+dfsg-1","3.24.2+dfsg-1","3.24.2+dfsg-1~bpo13+1","3.25.0+dfsg-1","3.25.0+dfsg-2","3.25.0+dfsg-3","3.25.0+dfsg-4","3.25.0+dfsg-5","3.26.0+dfsg-1","3.26.0+dfsg-1~bpo13+1","3.27.0+dfsg-1","3.27.1+dfsg-1","3.28.0+dfsg-1","3.28.0+dfsg-2","3.29.0+dfsg-1","3.30.0+dfsg-1","3.30.0+dfsg-1~bpo13+1","3.31.0+dfsg-1","3.31.1+dfsg-1","3.31.1+dfsg-1~bpo13+1","3.32.0+dfsg-1","3.32.1+dfsg-1","3.32.1+dfsg-1~bpo13+1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"freerdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1","1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.2","1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3","1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"freerdp2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0~git20170725.1.1648deb+dfsg1-1","2.0.0~git20170725.1.1648deb+dfsg1-5","2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu1","2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu2","2.0.0~git20170725.1.1648deb+dfsg1-6","2.0.0~git20170725.1.1648deb+dfsg1-6build1","2.0.0~git20170725.1.1648deb+dfsg1-7","2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1","2.1.1+dfsg1-0ubuntu0.18.04.1","2.2.0+dfsg1-0ubuntu0.18.04.1","2.2.0+dfsg1-0ubuntu0.18.04.2","2.2.0+dfsg1-0ubuntu0.18.04.3","2.2.0+dfsg1-0ubuntu0.18.04.4","2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","2.2.0+dfsg1-0ubuntu0.18.04.4+esm2","2.2.0+dfsg1-0ubuntu0.18.04.4+esm3","2.2.0+dfsg1-0ubuntu0.18.04.4+esm4","2.2.0+dfsg1-0ubuntu0.18.04.4+esm5","2.2.0+dfsg1-0ubuntu0.18.04.4+esm6"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"freerdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1","1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.1","1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"freerdp2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0~git20190204.1.2693389a+dfsg1-1","2.0.0~git20190204.1.2693389a+dfsg1-2"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Advisory","advisory","report"]},{"url":"https://www.vulncheck.com/advisories/freerdp-before-3.32.2-certificate-identity-validation-bypass-via-tls-verify-certificate","tags":["third-party-advisory","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121392","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-j5xv-pp35-jwf5"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121392.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-121392","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-121392","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-121392","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-9007-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-121386","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121387","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121388","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121389","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121390","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121391","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121393","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121394","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121395","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121396","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121397","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121398","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121399","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121400","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121401","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121402","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121403","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121404","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121405","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121406","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121407","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121408","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121409","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121410","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121411","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-121412","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-121392","title":"FreeRDP before 3.32.2 Certificate Identity Validation Bypass via tls_verify_certificate","description":"FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tls_verify_certificate() that accepts Common Name fallback despite non-matching SAN entries and matches IP literals against DNS strings. Man-in-the-middle attackers holding a certificate from a client-trusted CA can bypass server identity checks to intercept RDP sessions, including keystrokes, clipboard, and screen content.","status":"published","published":"2026-11-03T14:27:57.885Z","modified":"2026-11-03T18:31:19.966Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-295"],"updated_at":"2026-11-03T20:02:16.924578Z"}],"euvd":[{"id":"EUVD-2026-115924","description":"FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tls_verify_certificate() that accepts Common Name fallback despite non-matching SAN entries and matches IP literals against DNS strings. Man-in-the-middle attackers holding a certificate from a client-trusted CA can bypass server identity checks to intercept RDP sessions, including keystrokes, clipboard, and screen content.","status":"published","published":"2026-11-03T14:27:57Z","modified":"2026-11-03T18:31:19Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-03T20:20:08.621391Z"}],"ghsa":[{"id":"GHSA-j5xv-pp35-jwf5","title":"FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in...","description":"FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tls_verify_certificate() that accepts Common Name fallback despite non-matching SAN entries and matches IP literals against DNS strings. Man-in-the-middle attackers holding a certificate from a client-trusted CA can bypass server identity checks to intercept RDP sessions, including keystrokes, clipboard, and screen content.","status":"published","published":"2026-11-03T15:32:01Z","modified":"2026-11-03T15:32:01Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"},{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"}],"cwes":["CWE-295"],"updated_at":"2026-11-03T15:57:23.404697Z"}],"nvd":[{"id":"CVE-2026-121392","description":"FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tls_verify_certificate() that accepts Common Name fallback despite non-matching SAN entries and matches IP literals against DNS strings. Man-in-the-middle attackers holding a certificate from a client-trusted CA can bypass server identity checks to intercept RDP sessions, including keystrokes, clipboard, and screen content.","status":"published","published":"2026-11-03T15:17:26.71Z","modified":"2026-11-03T21:12:38.53Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-295"],"updated_at":"2026-11-04T00:48:10.032782Z"}],"osv":[{"id":"CVE-2026-121392","title":"FreeRDP before 3.32.2 Certificate Identity Validation Bypass via tls_verify_certificate","description":"FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tls_verify_certificate() that accepts Common Name fallback despite non-matching SAN entries and matches IP literals against DNS strings. Man-in-the-middle attackers holding a certificate from a client-trusted CA can bypass server identity checks to intercept RDP sessions, including keystrokes, clipboard, and screen content.","status":"published","published":"2026-11-03T14:27:57.885Z","modified":"2026-11-05T03:30:47.307442612Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical"}],"cwes":["CWE-295"],"updated_at":"2026-11-05T07:12:46.161235Z"},{"id":"DEBIAN-CVE-2026-121392","description":"FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tls_verify_certificate() that accepts Common Name fallback despite non-matching SAN entries and matches IP literals against DNS strings. Man-in-the-middle attackers holding a certificate from a client-trusted CA can bypass server identity checks to intercept RDP sessions, including keystrokes, clipboard, and screen content.","status":"published","published":"2026-11-03T15:17:26.71Z","modified":"2026-11-04T10:00:43.915162479Z","cvss":[{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"}],"updated_at":"2026-11-04T10:05:32.187009Z"},{"id":"UBUNTU-CVE-2026-121392","description":"FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tls_verify_certificate() that accepts Common Name fallback despite non-matching SAN entries and matches IP literals against DNS strings. Man-in-the-middle attackers holding a certificate from a client-trusted CA can bypass server identity checks to intercept RDP sessions, including keystrokes, clipboard, and screen content.","status":"published","published":"2026-11-03T15:17:00Z","modified":"2026-11-09T19:15:12.283425379Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"},{"version":"4.0","score":9.1,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-09T19:38:09.278998Z"},{"id":"USN-9007-1","title":"freerdp3 vulnerabilities","description":"It was discovered that FreeRDP contained multiple security issues. An\nattacker could possibly use these issues to obtain sensitive information,\ncause FreeRDP to crash, resulting in a denial of service, or execute\narbitrary code.","status":"published","published":"2026-11-09T13:21:41Z","modified":"2026-11-10T02:58:34.321235261Z","updated_at":"2026-11-10T03:21:46.325253Z"}]}}