{"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-2026-108421","cwes":["CWE-125"],"description":"Out-of-bounds read in Windows File Server Resource Management Service allows an unauthorized attacker to elevate privileges over a network.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":7.5,"severity":"high","source":"CNA: microsoft","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"}],"modifiedAt":1794344450725,"publishedAt":1794334761248,"references":[{"source":"CNA: microsoft","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108421"}],"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-2026-108421"}],"revision":"f0136d0a962f23923dc03443f5c07a8e832bb0f38702a6acd0b7ef073e0d559e","sources":[{"modifiedAt":1794344450725,"name":"CNA: microsoft","retrievedAt":1794345471933,"url":"https://www.cve.org/CVERecord?id=CVE-2026-108421"}],"ssvc":{"assessedAt":1794344048866,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Windows File Server Resource Management Service Elevation of Privilege Vulnerability","updatedAt":1794345471933}