{"id":"CVE-2026-77896","aliases":["EUVD-2026-73285","GHSA-h4c5-rp5p-jrmp"],"status":"published","title":"Windows Remote Desktop Client Denial of Service Vulnerability","description":"Integer overflow or wraparound in Remote Desktop Client allows an unauthorized attacker to deny service over a network.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.007,"percentile":0.53623,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-190"],"published":"2026-09-08T17:13:31Z","modified":"2026-11-10T21:32:17Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77896","tags":["vendor-advisory","patch","Vendor Advisory","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77896"},{"url":"https://github.com/advisories/GHSA-h4c5-rp5p-jrmp"}],"sources":{"cve":[{"id":"CVE-2026-77896","title":"Windows Remote Desktop Client Denial of Service Vulnerability","description":"Integer overflow or wraparound in Remote Desktop Client allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T17:13:31.182Z","modified":"2026-11-10T21:32:17.923Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-190"],"updated_at":"2026-11-10T22:48:53.557052Z"}],"euvd":[{"id":"EUVD-2026-73285","description":"Integer overflow or wraparound in Remote Desktop Client allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T17:13:31Z","modified":"2026-11-10T21:32:17Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T22:23:52.465948Z"}],"ghsa":[{"id":"GHSA-h4c5-rp5p-jrmp","title":"Integer overflow or wraparound in Remote Desktop Client allows an unauthorized attacker to deny...","description":"Integer overflow or wraparound in Remote Desktop Client allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T18:33:22Z","modified":"2026-09-08T18:34:00Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T15:11:34.019342Z"}],"nvd":[{"id":"CVE-2026-77896","description":"Integer overflow or wraparound in Remote Desktop Client allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-09-08T18:20:39.69Z","modified":"2026-09-28T20:06:03.75Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"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":"primary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:12:45.264578Z"}]}}