{"id":"CVE-2020-16863","aliases":["EUVD-2020-8821","GHSA-69gr-hfqx-6mvx"],"status":"published","title":"Windows Remote Desktop Service Denial of Service Vulnerability","description":"\u003cp\u003eA denial of service vulnerability exists in Windows Remote Desktop Service when an attacker connects to the target system using RDP and sends specially crafted requests. An attacker who successfully exploited this vulnerability could cause the Remote Desktop Service on the target system to stop responding.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would need to run a specially crafted application against a server which provides Remote Desktop Service.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting how Remote Desktop Service handles connection requests.\u003c/p\u003e","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/E:P/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.05847,"percentile":0.93274,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2020-10-16T22:17:33Z","modified":"2026-06-17T02:58:09Z","products":[{"vendor":"microsoft","product":"windows 7"},{"vendor":"microsoft","product":"windows 7 service pack 1"},{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1"},{"vendor":"microsoft","product":"windows server 2008 r2 service pack 1 (server core installation)"},{"vendor":"microsoft","product":"windows_7"},{"vendor":"microsoft","product":"windows_server_2008"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16863","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-16863"},{"url":"https://github.com/advisories/GHSA-69gr-hfqx-6mvx"}],"sources":{"cve":[{"id":"CVE-2020-16863","title":"Windows Remote Desktop Service Denial of Service Vulnerability","description":"\u003cp\u003eA denial of service vulnerability exists in Windows Remote Desktop Service when an attacker connects to the target system using RDP and sends specially crafted requests. An attacker who successfully exploited this vulnerability could cause the Remote Desktop Service on the target system to stop responding.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would need to run a specially crafted application against a server which provides Remote Desktop Service.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting how Remote Desktop Service handles connection requests.\u003c/p\u003e","status":"published","published":"2020-10-16T22:17:33Z","modified":"2024-10-01T15:56:57.82Z","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/E:P/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:35:59.116379Z"}],"euvd":[{"id":"EUVD-2020-8821","description":"\u003cp\u003eA denial of service vulnerability exists in Windows Remote Desktop Service when an attacker connects to the target system using RDP and sends specially crafted requests. An attacker who successfully exploited this vulnerability could cause the Remote Desktop Service on the target system to stop responding.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would need to run a specially crafted application against a server which provides Remote Desktop Service.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting how Remote Desktop Service handles connection requests.\u003c/p\u003e","status":"published","published":"2020-10-16T22:17:33Z","modified":"2024-10-01T15:56:57Z","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/E:P/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T00:28:01.48056Z"}],"ghsa":[{"id":"GHSA-69gr-hfqx-6mvx","title":"A denial of service vulnerability exists in Windows Remote Desktop Service when an attacker...","description":"A denial of service vulnerability exists in Windows Remote Desktop Service when an attacker connects to the target system using RDP and sends specially crafted requests, aka 'Windows Remote Desktop Service Denial of Service Vulnerability'.","status":"published","published":"2022-05-24T17:30:53Z","modified":"2023-12-31T21:30:20Z","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":"2026-11-02T14:55:18.712206Z"}],"nvd":[{"id":"CVE-2020-16863","description":"\u003cp\u003eA denial of service vulnerability exists in Windows Remote Desktop Service when an attacker connects to the target system using RDP and sends specially crafted requests. An attacker who successfully exploited this vulnerability could cause the Remote Desktop Service on the target system to stop responding.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would need to run a specially crafted application against a server which provides Remote Desktop Service.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting how Remote Desktop Service handles connection requests.\u003c/p\u003e","status":"published","published":"2020-10-16T23:15:12.587Z","modified":"2026-06-17T02:58:09.96Z","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"},{"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"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:19.351389Z"}]}}