{"id":"CVE-2026-96541","aliases":["DEBIAN-CVE-2026-96541","EUVD-2026-85525","GHSA-gv4j-r8qw-8qpc","UBUNTU-CVE-2026-96541"],"status":"published","title":"Gnome-remote-desktop: gnome-remote-desktop: unauthenticated rdp sockets lack a handshake deadline","description":"A denial-of-service flaw was found in gnome-remote-desktop. An unauthenticated remote attacker can open RDP connections without completing the handshake and retain the connection-throttling slots indefinitely because no pre-authentication handshake deadline is enforced. By exhausting the global connection limit, an attacker can prevent new RDP clients from connecting until a holding socket is closed.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00881,"percentile":0.59399,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2026-09-23T18:08:23Z","modified":"2026-11-03T22:23:39Z","affected":[{"source":"osv","ecosystem":"Debian:14","package":"gnome-remote-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["48.1-4","48.2-1","49.0-1","49.1-1","49.1-2","49.2-1","49.2-2","49.2-3","49.2-4","50.1-1","50.1-2","50.1-3","50.1-5","50.2-1","50~beta-1","51.0-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"gnome-remote-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.1.7-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"gnome-remote-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["40.2-1","41.0-1","41.1-3","41.2-1","42~beta-1","42~rc-1","42.0-1","42.0-2","42.0-4ubuntu1","42.1.1-0ubuntu1","42.2-0ubuntu1","42.3-0ubuntu1","42.4-0ubuntu1","42.7-0ubuntu1","42.9-0ubuntu0.22.04.1","42.9-0ubuntu0.22.04.2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"gnome-remote-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["45.0-1","45.1-1","45.1-1build1","46~rc-0ubuntu2","46.0-2","46.1-1","46.2-1~ubuntu24.04.2","46.3-0ubuntu1","46.3-0ubuntu1.1","46.3-0ubuntu1.2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"gnome-remote-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["50.0-0ubuntu2","50.1-3","50.1-5","51~alpha-0ubuntu1","51~alpha-0ubuntu2","51.0-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"gnome-remote-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["49.0-0ubuntu1","49.1-1","49.1-2","49.2-1","49.2-2","49.2-2ubuntu1","50~beta-1","50~rc-0ubuntu1","50.0-0ubuntu1","50.0-0ubuntu2","50.2-0ubuntu0.1"]}],"products":[{"vendor":"red hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-96541","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2539385","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://gitlab.gnome.org/GNOME/gnome-remote-desktop/-/issues/356","tags":["exploit","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96541"},{"url":"https://github.com/advisories/GHSA-gv4j-r8qw-8qpc"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-96541","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-96541","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-96541","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-96541","title":"Gnome-remote-desktop: gnome-remote-desktop: unauthenticated rdp sockets lack a handshake deadline","description":"A denial-of-service flaw was found in gnome-remote-desktop. An unauthenticated remote attacker can open RDP connections without completing the handshake and retain the connection-throttling slots indefinitely because no pre-authentication handshake deadline is enforced. By exhausting the global connection limit, an attacker can prevent new RDP clients from connecting until a holding socket is closed.","status":"published","published":"2026-09-23T18:08:23.661Z","modified":"2026-11-06T02:14:41.893Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-06T03:26:01.286096Z"}],"euvd":[{"id":"EUVD-2026-85525","description":"A denial-of-service flaw was found in gnome-remote-desktop. An unauthenticated remote attacker can open RDP connections without completing the handshake and retain the connection-throttling slots indefinitely because no pre-authentication handshake deadline is enforced. By exhausting the global connection limit, an attacker can prevent new RDP clients from connecting until a holding socket is closed.","status":"published","published":"2026-09-23T18:08:23Z","modified":"2026-11-06T02:14:41Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-06T03:02:58.554056Z"}],"ghsa":[{"id":"GHSA-gv4j-r8qw-8qpc","title":"A denial-of-service flaw was found in gnome-remote-desktop. An unauthenticated remote attacker...","description":"A denial-of-service flaw was found in gnome-remote-desktop. An unauthenticated remote attacker can open RDP connections without completing the handshake and retain the connection-throttling slots indefinitely because no pre-authentication handshake deadline is enforced. By exhausting the global connection limit, an attacker can prevent new RDP clients from connecting until a holding socket is closed.","status":"published","published":"2026-09-23T21:30:53Z","modified":"2026-09-23T21:30:53Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:12:21.120874Z"}],"nvd":[{"id":"CVE-2026-96541","description":"A denial-of-service flaw was found in gnome-remote-desktop. An unauthenticated remote attacker can open RDP connections without completing the handshake and retain the connection-throttling slots indefinitely because no pre-authentication handshake deadline is enforced. By exhausting the global connection limit, an attacker can prevent new RDP clients from connecting until a holding socket is closed.","status":"published","published":"2026-09-23T19:19:54.08Z","modified":"2026-11-06T03:16:48.63Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-06T06:59:05.647867Z"}],"osv":[{"id":"DEBIAN-CVE-2026-96541","description":"A denial-of-service flaw was found in gnome-remote-desktop. An unauthenticated remote attacker can open RDP connections without completing the handshake and retain the connection-throttling slots indefinitely because no pre-authentication handshake deadline is enforced. By exhausting the global connection limit, an attacker can prevent new RDP clients from connecting until a holding socket is closed.","status":"published","published":"2026-09-23T19:19:54.08Z","modified":"2026-11-04T09:47:25.221698869Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-04T10:05:57.467041Z"},{"id":"UBUNTU-CVE-2026-96541","description":"A denial-of-service flaw was found in gnome-remote-desktop. An unauthenticated remote attacker can open RDP connections without completing the handshake and retain the connection-throttling slots indefinitely because no pre-authentication handshake deadline is enforced. By exhausting the global connection limit, an attacker can prevent new RDP clients from connecting until a holding socket is closed.","status":"published","published":"2026-09-23T19:19:00Z","modified":"2026-10-17T13:01:19.662891837Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:57:44.071534Z"}]}}