{"id":"CVE-2026-18358","aliases":["ALSA-2026:54512","DEBIAN-CVE-2026-18358","EUVD-2026-51528","GHSA-5hp4-5mvq-qw3w","RHSA-2026:54512","RLSA-2026:54512","UBUNTU-CVE-2026-18358","openSUSE-SU-2026:21888-1"],"status":"published","title":"Gnome-remote-desktop: gnome-remote-desktop system-mode rdp server missing connection throttling allows unauthenticated denial of service","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming connection handler bypasses the connection throttler, allowing an unauthenticated remote attacker to open many parallel pre-authentication connections to the RDP listener. This can accumulate accepted sockets and pending routing-token operations until timeout, exhausting resources and preventing legitimate users from establishing RDP sessions. This issue does not affect the upstream version.","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":"2026-11-10","score":0.00663,"percentile":0.52043,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2026-07-31T12:20:23Z","modified":"2026-11-05T19:25:15Z","fixes":[{"ecosystem":"AlmaLinux:10","package":"gnome-remote-desktop","fixed_in":["49.3-4.el10_2"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:10.2","package":"gnome-remote-desktop","fixed_in":["0:49.3-4.el10_2"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:10.2","package":"gnome-remote-desktop-debuginfo","fixed_in":["0:49.3-4.el10_2"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:10.2","package":"gnome-remote-desktop-debugsource","fixed_in":["0:49.3-4.el10_2"],"sources":["osv"]},{"ecosystem":"Rocky Linux:10","package":"gnome-remote-desktop","fixed_in":["0:49.3-4.el10_2"],"sources":["osv"]},{"ecosystem":"openSUSE:Leap 16.0","package":"gnome-remote-desktop","fixed_in":["48.3-160000.3.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"AlmaLinux:10","package":"gnome-remote-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"49.3-4.el10_2"}]}]},{"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":"Red Hat:enterprise_linux:10.2","package":"gnome-remote-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:49.3-4.el10_2"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:10.2","package":"gnome-remote-desktop-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:49.3-4.el10_2"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:10.2","package":"gnome-remote-desktop-debugsource","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:49.3-4.el10_2"}]}]},{"source":"osv","ecosystem":"Rocky Linux:10","package":"gnome-remote-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:49.3-4.el10_2"}]}]},{"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"]},{"source":"osv","ecosystem":"openSUSE:Leap 16.0","package":"gnome-remote-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"48.3-160000.3.1"}]}]}],"products":[{"vendor":"gnome","product":"gnome-remote-desktop"},{"vendor":"red hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 10.0 extended update support"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:54512","tags":["vendor-advisory","x_refsource_REDHAT","advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:86194","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-18358","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462876","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18358","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-5hp4-5mvq-qw3w"},{"url":"https://bugzilla.redhat.com/2462876","tags":["report"]},{"url":"https://errata.almalinux.org/10/ALSA-2026-54512.html","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-18358","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_54512.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-18358","tags":["advisory","report"]},{"url":"https://errata.rockylinux.org/RLSA-2026:54512","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-18358","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1273354","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-18358","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-18358","title":"Gnome-remote-desktop: gnome-remote-desktop system-mode rdp server missing connection throttling allows unauthenticated denial of service","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming connection handler bypasses the connection throttler, allowing an unauthenticated remote attacker to open many parallel pre-authentication connections to the RDP listener. This can accumulate accepted sockets and pending routing-token operations until timeout, exhausting resources and preventing legitimate users from establishing RDP sessions. This issue does not affect the upstream version.","status":"published","published":"2026-07-31T12:20:23.371Z","modified":"2026-11-05T19:25:15.189Z","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":"2026-11-05T20:54:59.423743Z"}],"euvd":[{"id":"EUVD-2026-51528","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming connection handler bypasses the connection throttler, allowing an unauthenticated remote attacker to open many parallel pre-authentication connections to the RDP listener. This can accumulate accepted sockets and pending routing-token operations until timeout, exhausting resources and preventing legitimate users from establishing RDP sessions. This issue does not affect the upstream version.","status":"published","published":"2026-07-31T12:20:23Z","modified":"2026-11-05T19:25:15Z","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":"2026-11-05T20:01:48.21368Z"}],"ghsa":[{"id":"GHSA-5hp4-5mvq-qw3w","title":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon...","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming connection handler bypasses the connection throttler, allowing an unauthenticated remote attacker to open many parallel pre-authentication connections to the RDP listener. This can accumulate accepted sockets and pending routing-token operations until timeout, exhausting resources and preventing legitimate users from establishing RDP sessions. This issue does not affect the upstream version.","status":"published","published":"2026-07-31T15:32:49Z","modified":"2026-10-21T00:31:40Z","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":"2026-11-02T15:14:05.433073Z"}],"nvd":[{"id":"CVE-2026-18358","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming connection handler bypasses the connection throttler, allowing an unauthenticated remote attacker to open many parallel pre-authentication connections to the RDP listener. This can accumulate accepted sockets and pending routing-token operations until timeout, exhausting resources and preventing legitimate users from establishing RDP sessions. This issue does not affect the upstream version.","status":"published","published":"2026-07-31T13:17:19.933Z","modified":"2026-11-05T20:17:52.043Z","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":"2026-11-05T21:56:42.883538Z"}],"osv":[{"id":"DEBIAN-CVE-2026-18358","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming connection handler bypasses the connection throttler, allowing an unauthenticated remote attacker to open many parallel pre-authentication connections to the RDP listener. This can accumulate accepted sockets and pending routing-token operations until timeout, exhausting resources and preventing legitimate users from establishing RDP sessions. This issue does not affect the upstream version.","status":"published","published":"2026-07-31T13:17:19.933Z","modified":"2026-10-23T17:47:41.012070126Z","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":"2026-11-02T15:45:53.097669Z"},{"id":"RHSA-2026:54512","title":"Red Hat Security Advisory: gnome-remote-desktop security update","status":"published","published":"2026-08-14T10:16:46Z","modified":"2026-08-14T10:33:05.168951042Z","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":"2026-11-02T15:53:21.457353Z"},{"id":"RLSA-2026:54512","title":"Moderate: gnome-remote-desktop security update","description":"GNOME Remote Desktop is a remote desktop and screen sharing service for the GNOME desktop environment.\n\nSecurity Fix(es):\n\n* gnome-remote-desktop: gnome-remote-desktop system-mode RDP server missing connection throttling allows unauthenticated denial of service (CVE-2026-18358)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-08-14T12:06:50.87278Z","modified":"2026-08-14T12:30:04.709310624Z","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":"2026-11-02T15:53:26.111232Z"},{"id":"UBUNTU-CVE-2026-18358","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming connection handler bypasses the connection throttler, allowing an unauthenticated remote attacker to open many parallel pre-authentication connections to the RDP listener. This can accumulate accepted sockets and pending routing-token operations until timeout, exhausting resources and preventing legitimate users from establishing RDP sessions. This issue does not affect the upstream version.","status":"published","published":"2026-07-31T13:17:00Z","modified":"2026-10-17T12:56:47.213699175Z","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":"2026-11-02T16:56:01.334185Z"},{"id":"ALSA-2026:54512","title":"Moderate: gnome-remote-desktop security update","description":"GNOME Remote Desktop is a remote desktop and screen sharing service for the GNOME desktop environment.  \n\nSecurity Fix(es):  \n\n  * gnome-remote-desktop: gnome-remote-desktop system-mode RDP server missing connection throttling allows unauthenticated denial of service (CVE-2026-18358)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-08-13T00:00:00Z","modified":"2026-10-29T11:30:39.294909352Z","updated_at":"2026-11-02T15:27:54.753319Z"},{"id":"openSUSE-SU-2026:21888-1","title":"Security update for gnome-remote-desktop","description":"This update for gnome-remote-desktop fixes the following issue:\n\n- CVE-2026-18358: system-mode RDP server missing connection throttling can allow unauthenticated denial of service\n  (bsc#1273354).\n","status":"published","published":"2026-09-20T12:09:24Z","modified":"2026-09-25T18:23:11.537925182Z","updated_at":"2026-11-02T16:58:42.426393Z"}]}}