{"affected":[{"platforms":["ARM64-based Systems"],"product":"Windows 11 version 23H2","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.22631.7652","status":"affected","version":"10.0.22631.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows 11 Version 23H2","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.22631.7652","status":"affected","version":"10.0.22631.0","versionType":"custom"}]},{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 Version 24H2","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.9711","status":"affected","version":"10.0.26100.0","versionType":"custom"}]},{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 Version 25H2","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.26200.9711","status":"affected","version":"10.0.26200.0","versionType":"custom"}]},{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 version 26H1","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.28000.3231","status":"affected","version":"10.0.28000.0","versionType":"custom"}]},{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 Version 26H2","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.26300.9711","status":"affected","version":"10.0.26300.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2022","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.20348.5761","status":"affected","version":"10.0.20348.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2025","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.33650","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":"10.0.26100.33650","status":"affected","version":"10.0.26100.0","versionType":"custom"}]}],"cpeConfigurations":[{"negate":false,"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.22631.7652","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.22631.7652","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.26100.9711","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.26100.9711","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.26200.9711","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.26200.9711","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.28000.3231","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.28000.3231","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_26h2:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.26300.9711","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_26h2:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.26300.9711","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.20348.5761","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.26100.33650","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"cveId":"CVE-2026-100219","cwes":["CWE-416"],"description":"Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.","epss":{"date":"2026-11-03","percentile":0.65837,"score":0.01105},"exploits":[],"kev":null,"metrics":[{"score":9.8,"severity":"critical","source":"CNA: microsoft","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},{"score":9.8,"severity":"critical","source":"NVD: secure@microsoft.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793751427276,"publishedAt":1791918091456,"references":[{"source":"CNA: microsoft","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100219"},{"source":"secure@microsoft.com","tags":["Patch","Vendor Advisory"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100219"}],"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-2026-100219"},{"kind":"fix","source":"secure@microsoft.com","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-2026-100219"}],"revision":"22f8934aaae4f304a9f846ab2275bf3ace52fd16c34956fab3b8678ad4539253","sources":[{"modifiedAt":1793751427276,"name":"CNA: microsoft","retrievedAt":1793754643433,"url":"https://www.cve.org/CVERecord?id=CVE-2026-100219"},{"modifiedAt":1793747843917,"name":"NVD","retrievedAt":1793751451315,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100219"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793748164229,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-100219"}],"ssvc":{"assessedAt":1791950233320,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Microsoft QUIC Remote Code Execution Vulnerability","updatedAt":1793754643433}