{"id":"CVE-2026-62909","state":"PUBLISHED","title":".NET Elevation of Privilege Vulnerability","description":"Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.","publishedAt":"2026-08-11T17:04:43.199Z","updatedAt":"2026-10-30T17:20:29.986Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","source":"microsoft"},"assigner":"microsoft","products":["Microsoft .NET 10.0 runtime","Microsoft .NET 8.0 runtime","Microsoft .NET 9.0 runtime","Microsoft Microsoft Visual Studio 2022 version 17.14","Microsoft Microsoft Visual Studio 2026 version 18.8"],"affected":[{"vendor":"Microsoft","product":".NET 10.0 runtime","versions":[{"version":"10.0.0","status":"affected","lessThan":"10.0.11","versionType":"custom"}]},{"vendor":"Microsoft","product":".NET 8.0 runtime","versions":[{"version":"8.0.0","status":"affected","lessThan":"8.0.30","versionType":"custom"}]},{"vendor":"Microsoft","product":".NET 9.0 runtime","versions":[{"version":"9.0.0","status":"affected","lessThan":"9.0.19","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft Visual Studio 2022 version 17.14","versions":[{"version":"17.14.0","status":"affected","lessThan":"17.14.38","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft Visual Studio 2026 version 18.8","versions":[{"version":"18.0","status":"affected","lessThan":"18.8.3","versionType":"custom"}]}],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62909"],"weaknesses":["CWE-252"],"ingestedAt":"2026-10-30T17:32:04.633Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/62xxx/CVE-2026-62909.json","commit":"3341b8c15da9d44519feb86e18f02f360209d08a","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-62909","state":"PUBLISHED","datePublished":"2026-08-11T17:04:43.199Z","dateUpdated":"2026-10-30T17:20:29.986Z","assignerShortName":"microsoft","assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateReserved":"2026-07-14T21:25:21.036Z"},"containers":{"cna":{"title":".NET Elevation of Privilege Vulnerability","descriptions":[{"lang":"en-US","value":"Uncaught exception in .NET allows an authorized attacker to elevate privileges locally."}],"affected":[{"vendor":"Microsoft","product":".NET 10.0 runtime","versions":[{"version":"10.0.0","status":"affected","lessThan":"10.0.11","versionType":"custom"}]},{"vendor":"Microsoft","product":".NET 8.0 runtime","versions":[{"version":"8.0.0","status":"affected","lessThan":"8.0.30","versionType":"custom"}]},{"vendor":"Microsoft","product":".NET 9.0 runtime","versions":[{"version":"9.0.0","status":"affected","lessThan":"9.0.19","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft Visual Studio 2022 version 17.14","versions":[{"version":"17.14.0","status":"affected","lessThan":"17.14.38","versionType":"custom"}]},{"vendor":"Microsoft","product":"Microsoft Visual Studio 2026 version 18.8","versions":[{"version":"18.0","status":"affected","lessThan":"18.8.3","versionType":"custom"}]}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62909","name":".NET Elevation of Privilege Vulnerability","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","baseSeverity":"HIGH","baseScore":7.8,"vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-252","description":"CWE-252: Unchecked Return Value","lang":"en-US","type":"CWE"}]}],"providerMetadata":{"shortName":"microsoft","orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","dateUpdated":"2026-10-30T17:20:29.986Z"},"datePublic":"2026-08-11T14:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*","versionStartIncluding":"10.0.0","versionEndExcluding":"10.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*","versionStartIncluding":"8.0.0","versionEndExcluding":"8.0.30"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*","versionStartIncluding":"9.0.0","versionEndExcluding":"9.0.19"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*","versionStartIncluding":"18.0","versionEndExcluding":"18.8.3"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*","versionStartIncluding":"17.14.0","versionEndExcluding":"17.14.38"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-12T03:55:32.907064Z","id":"CVE-2026-62909","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-12T14:57:36.360Z"}}]}}}