{"affected":[{"platforms":["x64-based Systems"],"product":"Windows Server 2016","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.14393.9688","status":"affected","version":"10.0.14393.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2016 (Server Core installation)","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.14393.9688","status":"affected","version":"10.0.14393.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2019","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.17763.9487","status":"affected","version":"10.0.17763.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2019 (Server Core installation)","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.17763.9487","status":"affected","version":"10.0.17763.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2022","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.20348.5870","status":"affected","version":"10.0.20348.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2025","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.33822","status":"affected","version":"10.0.26100.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2025 (Server Core installation)","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.33822","status":"affected","version":"10.0.26100.0","versionType":"custom"}]}],"cveId":"CVE-2026-105590","cwes":["CWE-295"],"description":"Improper certificate validation in Windows Active Directory Certificate Services allows an authorized attacker to bypass a security feature over a network.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":5.3,"severity":"medium","source":"CNA: microsoft","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","version":"3.1"}],"modifiedAt":1794344454207,"publishedAt":1794334505595,"references":[{"source":"CNA: microsoft","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105590"}],"remediation":[{"kind":"fix","source":"CNA: microsoft","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105590"}],"revision":"89225f7eaba6bca95626653b40f3494bad610f88ae2f361c475287acf88a6e37","sources":[{"modifiedAt":1794344454207,"name":"CNA: microsoft","retrievedAt":1794345308636,"url":"https://www.cve.org/CVERecord?id=CVE-2026-105590"}],"ssvc":{"assessedAt":1794344354753,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Windows Active Directory Certificate Services Security Feature Bypass","updatedAt":1794345308636}