{"id":"CVE-2026-105016","sourceIdentifier":"secure@microsoft.com","published":"2026-10-13T19:17:57.750","lastModified":"2026-10-22T22:17:52.370","vulnStatus":"Undergoing Analysis","cveTags":[],"descriptions":[{"lang":"en","value":"Heap-based buffer overflow in Microsoft QUIC allows an unauthorized attacker to execute code over a network."}],"affected":[{"source":"secure@microsoft.com","affectedData":[{"vendor":"Microsoft","product":".NET 10.0 runtime","versions":[{"version":"10.0.0","lessThan":"10.0.14","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":".NET 11.0 runtime","versions":[{"version":"11.0.0","lessThan":"11.0.0-rc.2.26504.105","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":".NET 8.0 runtime","versions":[{"version":"8.0.0","lessThan":"8.0.32","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":".NET 9.0 runtime","versions":[{"version":"9.0.0","lessThan":"9.0.21","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Microsoft Visual Studio 2022 version 17.14","versions":[{"version":"17.14.0","lessThan":"17.14.42","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Microsoft Visual Studio 2026 version 18.10","versions":[{"version":"18.10.0","lessThan":"18.10.4","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 11 version 23H2","platforms":["ARM64-based Systems"],"versions":[{"version":"10.0.22631.0","lessThan":"10.0.22631.7652","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 11 Version 23H2","platforms":["x64-based Systems"],"versions":[{"version":"10.0.22631.0","lessThan":"10.0.22631.7652","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 11 Version 24H2","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.26100.0","lessThan":"10.0.26100.9711","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 11 Version 25H2","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.26200.0","lessThan":"10.0.26200.9711","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 11 version 26H1","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.28000.0","lessThan":"10.0.28000.3231","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 11 Version 26H2","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.26300.0","lessThan":"10.0.26300.9711","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2022","platforms":["x64-based Systems"],"versions":[{"version":"10.0.20348.0","lessThan":"10.0.20348.5761","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2025","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","lessThan":"10.0.26100.33650","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2025 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.26100.0","lessThan":"10.0.26100.33650","versionType":"custom","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"secure@microsoft.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-15T00:00:00+00:00","id":"CVE-2026-105016","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"secure@microsoft.com","type":"Secondary","description":[{"lang":"en","value":"CWE-122"}]}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105016","source":"secure@microsoft.com"}]}