{"containers":{"cna":{"title":"Microsoft Windows Transport Layer Security Denial of Service Vulnerability","datePublic":"2020-05-12T14:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*","versionStartIncluding":"10.0.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_1803:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*","versionStartIncluding":"10.0.17763.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:arm64:*","versionStartIncluding":"10.0.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.17763.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.17763.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x86:*","versionStartIncluding":"10.0.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_1909:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_10:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.0","versionEndExcluding":"publication"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_1903:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.0","versionEndExcluding":"publication"}]}]}],"affected":[{"vendor":"Microsoft","product":"Windows 10 Version 1709","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1709 for 32-bit Systems","platforms":["32-bit Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1803","platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1809","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1809","platforms":["ARM64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1903 for 32-bit Systems","versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1903 for ARM64-based Systems","versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1903 for x64-based Systems","versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1909","platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2019","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2019 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server, version 1803  (Server Core Installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server, version 1903 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server, version 1909 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]}],"descriptions":[{"value":"A denial of service vulnerability exists in the Windows implementation of Transport Layer Security (TLS) when it improperly handles certain key exchanges. An attacker who successfully exploited the vulnerability could cause a target system to stop responding.\nTo exploit this vulnerability, a remote unauthenticated attacker could send a specially crafted request to a target system utilizing TLS 1.2 or lower, triggering the system to automatically reboot.\nThe update addresses the vulnerability by changing the way TLS key exchange messages are validated.","lang":"en-US"}],"problemTypes":[{"descriptions":[{"description":"Denial of Service","lang":"en-US","type":"Impact"}]}],"providerMetadata":{"orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","shortName":"microsoft","dateUpdated":"2026-08-19T16:33:39.283Z"},"references":[{"name":"Microsoft Windows Transport Layer Security Denial of Service Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1118"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","baseSeverity":"HIGH","baseScore":8.6,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:P/RL:O/RC:C"}}]},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T06:25:01.156Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1118"}]}]},"cveMetadata":{"assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","assignerShortName":"microsoft","cveId":"CVE-2020-1118","datePublished":"2020-05-21T22:53:14.000Z","dateReserved":"2019-11-04T00:00:00.000Z","dateUpdated":"2026-08-19T16:33:39.283Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"}