{"id":"CVE-2026-69439","title":"Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.","summary":"Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-122"],"vendor":"Microsoft","product":".NET 10.0","affected":[".net_10.0 >= 10.0.0 < 10.0.12",".net_11.0 >= 11.0.0 < 11.0 RC1",".net_8.0 >= 8.0.0 < 8.0.31",".net_9.0 >= 9.0.0 < 9.0.20","visual_studio_2022_version_17.14 >= 17.14.0 < 17.14.40","visual_studio_2026_version_18.9 >= 18.9.0 < 18.9.3"],"published":"2026-09-08","updated":"2026-09-09","sourceUpdated":"2026-09-09T10:18:31.050","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-69439","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69439","label":"secure@microsoft.com"},{"url":"https://github.com/dotnet/runtime/security/advisories/GHSA-527h-q9f6-p7qx"},{"url":"https://nvd.nist.gov/vuln/detail/cve-2026-69439"},{"url":"https://github.com/advisories/GHSA-527h-q9f6-p7qx"}],"tags":["nvd","cve.org","ghsa","nuget"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-09T04:18:13.070091Z"},"ingestedAt":"2026-09-08T19:08:49.612Z","aliases":["GHSA-527h-q9f6-p7qx"],"ecosystem":"nuget","patched":["Microsoft.DiaSymReader.Native 18.9.0-beta1.26405.2"],"epss":0.00738,"epssPercentile":0.52623,"slug":"CVE-2026-69439","body":"## Overview\n\nHeap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-69439)\n\nAffected packages:\n\n- `Microsoft.DiaSymReader.Native >= 17.10.0-beta1.24272.1, <= 18.9.0-beta1.26405.1`\n\nPatched in:\n\n- `Microsoft.DiaSymReader.Native 18.9.0-beta1.26405.2`\n\nSource: https://github.com/advisories/GHSA-527h-q9f6-p7qx","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}