{"affected":[{"affectedData":[{"platforms":["32-bit Systems","x64-based Systems"],"product":"Windows 10 Version 1507","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.10240.0","versionType":"custom"}]},{"platforms":["32-bit Systems","x64-based Systems"],"product":"Windows 10 Version 1607","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.14393.0","versionType":"custom"}]},{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 10 Version 1709","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.0","versionType":"custom"}]},{"platforms":["32-bit Systems"],"product":"Windows 10 Version 1709 for 32-bit Systems","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.0","versionType":"custom"}]},{"platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"product":"Windows 10 Version 1803","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.0","versionType":"custom"}]},{"platforms":["32-bit Systems","x64-based Systems"],"product":"Windows 10 Version 1809","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.17763.0","versionType":"custom"}]},{"platforms":["ARM64-based Systems"],"product":"Windows 10 Version 1809","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.0","versionType":"custom"}]},{"product":"Windows 10 Version 1903 for 32-bit Systems","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.0","versionType":"custom"}]},{"product":"Windows 10 Version 1903 for ARM64-based Systems","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.0","versionType":"custom"}]},{"product":"Windows 10 Version 1903 for x64-based Systems","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.0","versionType":"custom"}]},{"platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"product":"Windows 10 Version 1909","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2016","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.14393.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2016 (Server Core installation)","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.14393.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2019","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.17763.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2019 (Server Core installation)","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.17763.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server, version 1803  (Server Core Installation)","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server, version 1903 (Server Core installation)","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server, version 1909 (Server Core installation)","vendor":"Microsoft","versions":[{"lessThan":"publication","status":"affected","version":"10.0.0","versionType":"custom"}]}],"source":"secure@microsoft.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:*","matchCriteriaId":"084984D5-D241-497B-B118-50C6C1EAD468","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:*","matchCriteriaId":"BA592626-F17C-4F46-823B-0947D102BBD2","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:*","matchCriteriaId":"897A48D7-FCA1-4560-AFBB-718AF19BA3A2","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x86:*","matchCriteriaId":"507EB48C-F479-424C-8ABA-C279AB4FE3F4","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*","matchCriteriaId":"83B14968-3985-43C3-ACE5-8307196EFAE3","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:*","matchCriteriaId":"7CB85C75-4D35-480E-843D-60579EC75FCB","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*","matchCriteriaId":"6B8F3DD2-A145-4AF1-8545-CC42892DA3D1","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:*","matchCriteriaId":"3FB5CDAE-C713-4D9D-9D6A-2C2E8924A4BB","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*","matchCriteriaId":"E9273B95-20ED-4547-B0A8-95AD15B30372","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*","matchCriteriaId":"041FF8BA-0B12-4A1F-B4BF-9C4F33B7C1E7","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*","matchCriteriaId":"DB79EE26-FC32-417D-A49C-A1A63165A968","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"A denial of service vulnerability exists when Connected User Experiences and Telemetry Service improperly handles file operations. An attacker who successfully exploited this vulnerability could cause a system to stop responding.\nTo exploit the vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability.\nThe security update addresses the vulnerability by  correcting how the Connected User Experiences and Telemetry Service handles file operations."},{"lang":"es","value":"Se presenta una vulnerabilidad denegación de servicio cuando Connected User Experiences y Telemetry Service maneja inapropiadamente las operaciones de archivos, también se conoce como \"Connected User Experiences and Telemetry Service Denial of Service Vulnerability\". Este ID de CVE es diferente de CVE-2020-1084."}],"id":"CVE-2020-1123","lastModified":"2026-08-19T17:17:20.603","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"LOW","cvssData":{"accessComplexity":"LOW","accessVector":"LOCAL","authentication":"NONE","availabilityImpact":"PARTIAL","baseScore":2.1,"confidentialityImpact":"NONE","integrityImpact":"NONE","vectorString":"AV:L/AC:L/Au:N/C:N/I:N/A:P","version":"2.0"},"exploitabilityScore":3.9,"impactScore":2.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":1.8,"impactScore":3.6,"source":"secure@microsoft.com","type":"Primary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":1.8,"impactScore":3.6,"source":"nvd@nist.gov","type":"Secondary"}]},"published":"2020-05-21T23:15:15.603","references":[{"source":"secure@microsoft.com","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1123"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"],"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1123"}],"sourceIdentifier":"secure@microsoft.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"NVD-CWE-noinfo"}],"source":"nvd@nist.gov","type":"Primary"}]}