{"id":"CVE-2026-70174","aliases":[],"title":".NET Remote Code Execution Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","products":[{"vendor":"Microsoft","name":".NET 10.0 runtime","platforms":[],"versions":[{"version":"10.0.0","status":"affected","lessThan":"10.0.13","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":".NET 11.0 runtime","platforms":[],"versions":[{"version":"11.0.0","status":"affected","lessThan":"11.0.0-rc.2","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":".NET 8.0 runtime","platforms":[],"versions":[{"version":"8.0.0","status":"affected","lessThan":"8.0.32","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":".NET 9.0 runtime","platforms":[],"versions":[{"version":"9.0.0","status":"affected","lessThan":"9.0.21","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5","platforms":["Windows 11 version 26H1","Windows Server 2012","Windows Server 2012 R2"],"versions":[{"version":"3.5.0","status":"affected","lessThan":"2.0.50727.9188 AND 3.0.30729.9171","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2","platforms":["Windows 10 version 1607","Windows Server 2016","Windows Server 2019"],"versions":[{"version":"3.0.0.0","status":"affected","lessThan":"2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5 AND 4.7.2","platforms":["Windows 10 version 1809"],"versions":[{"version":"4.7.0","status":"affected","lessThan":"2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5 AND 4.8","platforms":["Windows 10 version 1809","Windows 10 version 21H2","Windows 10 version 22H2","Windows Server 2019","Windows Server 2022"],"versions":[{"version":"4.8.0","status":"affected","lessThan":"2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5 AND 4.8.1","platforms":["Windows 10 version 21H2","Windows 10 version 22H2","Windows 11 version 23H2","Windows 11 version 24H2","Windows 11 version 25H2","Windows 11 version 26H2","Windows Server 2022","Windows Server 2025"],"versions":[{"version":"4.8.1","status":"affected","lessThan":"2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2","platforms":["Windows Server 2012","Windows Server 2012 R2"],"versions":[{"version":"4.7.0","status":"affected","lessThan":"4.7.4150.0","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 4.8","platforms":["Windows 10 version 1607","Windows Server 2012","Windows Server 2012 R2","Windows Server 2016"],"versions":[{"version":"4.8.0","status":"affected","lessThan":"4.8.4811.0","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 4.8.1","platforms":["Windows 11 version 26H1"],"versions":[{"version":"4.8.0.0","status":"affected","lessThan":"4.8.9363.0","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":"Microsoft Visual Studio 2022 version 17.14","platforms":[],"versions":[{"version":"17.14.0","status":"affected","lessThan":"17.14.42","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"},{"vendor":"Microsoft","name":"Microsoft Visual Studio 2026 version 18.10","platforms":[],"versions":[{"version":"18.10.0","status":"affected","lessThan":"18.10.4","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"}],"remediation":[],"description":"Improperly implemented security check for standard in .NET allows an unauthorized attacker to execute code over a network.","severity":"high","score":8.8,"published":"2026-10-13T19:00:25.964Z","modified":"2026-10-28T18:15:05.731Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70174"],"sources":[{"name":"CVE","id":"CVE-2026-70174","modified":"2026-10-28T18:15:05.731Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-70174"}],"assessments":[{"source":"microsoft","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","score":8.8}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T20:45:31.448Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}