{"id":"CVE-2026-109833","aliases":["EUVD-2026-98479","GHSA-ww8j-g775-7xjg","UBUNTU-CVE-2026-109833"],"status":"published","title":"Gnome-remote-desktop: heap buffer overflow in gnome-remote-desktop vnc tls peek buffer handling allows remote denial of service","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. In the VNC TLS read path, partial consumption of the internal peek buffer incorrectly moves remaining peeked bytes into the caller-supplied buffer instead of compacting the peek buffer. A remote attacker who can reach an enabled VNC TLS listener and trigger a peek/read size mismatch can cause an out-of-bounds write, leading to denial of service.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00368,"percentile":0.3107,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-10-13T12:00:55Z","modified":"2026-11-05T16:19:52Z","affected":[{"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-2026-109833","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550367","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109833"},{"url":"https://github.com/advisories/GHSA-ww8j-g775-7xjg"},{"url":"https://ubuntu.com/security/CVE-2026-109833","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-109833","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-109833","title":"Gnome-remote-desktop: heap buffer overflow in gnome-remote-desktop vnc tls peek buffer handling allows remote denial of service","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. In the VNC TLS read path, partial consumption of the internal peek buffer incorrectly moves remaining peeked bytes into the caller-supplied buffer instead of compacting the peek buffer. A remote attacker who can reach an enabled VNC TLS listener and trigger a peek/read size mismatch can cause an out-of-bounds write, leading to denial of service.","status":"published","published":"2026-10-13T12:00:55.5Z","modified":"2026-11-05T16:19:52.878Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-05T17:53:58.925122Z"}],"euvd":[{"id":"EUVD-2026-98479","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. In the VNC TLS read path, partial consumption of the internal peek buffer incorrectly moves remaining peeked bytes into the caller-supplied buffer instead of compacting the peek buffer. A remote attacker who can reach an enabled VNC TLS listener and trigger a peek/read size mismatch can cause an out-of-bounds write, leading to denial of service.","status":"published","published":"2026-10-13T12:00:55Z","modified":"2026-11-05T16:19:52Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-05T18:00:58.377138Z"}],"ghsa":[{"id":"GHSA-ww8j-g775-7xjg","title":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. In the VNC TLS...","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. In the VNC TLS read path, partial consumption of the internal peek buffer incorrectly moves remaining peeked bytes into the caller-supplied buffer instead of compacting the peek buffer. A remote attacker who can reach an enabled VNC TLS listener and trigger a peek/read size mismatch can cause an out-of-bounds write, leading to denial of service.","status":"published","published":"2026-10-13T15:32:18Z","modified":"2026-10-13T15:32:26Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:13:10.715475Z"}],"nvd":[{"id":"CVE-2026-109833","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. In the VNC TLS read path, partial consumption of the internal peek buffer incorrectly moves remaining peeked bytes into the caller-supplied buffer instead of compacting the peek buffer. A remote attacker who can reach an enabled VNC TLS listener and trigger a peek/read size mismatch can cause an out-of-bounds write, leading to denial of service.","status":"published","published":"2026-10-13T13:17:29.43Z","modified":"2026-11-05T17:17:35.693Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-05T19:56:00.556424Z"}],"osv":[{"id":"UBUNTU-CVE-2026-109833","description":"A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. In the VNC TLS read path, partial consumption of the internal peek buffer incorrectly moves remaining peeked bytes into the caller-supplied buffer instead of compacting the peek buffer. A remote attacker who can reach an enabled VNC TLS listener and trigger a peek/read size mismatch can cause an out-of-bounds write, leading to denial of service.","status":"published","published":"2026-10-13T13:17:00Z","modified":"2026-10-28T17:50:33Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:55:59.591851Z"}]}}