{"id":"CVE-2021-43877","title":"ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability","summary":"ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","cvssSource":"cna","vendor":"Microsoft","product":"Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)","affected":["visual_studio_2019_version_16.7_includes_16.0_16.6 >= 16.0.0 < 16.7.23","visual_studio_2019_version_16.9_includes_16.0_-_16.8 >= 15.0.0 < 16.9.15","visual_studio_2019_version_16.11_includes_16.0_-_16.10 >= 16.11.0 < 16.11.8","visual_studio_2022_version_17.0 >= 17.0.0 < 17.0.3","asp.net_core_3.1 >= 3.0 < 3.1.22","asp.net_core_5.0 >= 5.0 < 5.0.13","asp.net_core_6.0 >= 6.0 < 6.0.101","visual_studio_2022_version_17.1 >= 17.0.0 < 17.1.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-08T21:01:44.367867Z"},"published":"2021-12-15","updated":"2026-11-02","sourceUpdated":"2026-11-02T18:14:55.026Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2021-43877","references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877"}],"tags":["cve.org"],"epss":0.00733,"epssPercentile":0.5464,"ingestedAt":"2026-11-05T19:30:42.770Z","slug":"CVE-2021-43877","body":"## Overview\n\nASP.NET Core and Visual Studio Elevation of Privilege Vulnerability\n\n## Affected\n\n- `visual_studio_2019_version_16.7_includes_16.0_16.6 >= 16.0.0 < 16.7.23`\n- `visual_studio_2019_version_16.9_includes_16.0_-_16.8 >= 15.0.0 < 16.9.15`\n- `visual_studio_2019_version_16.11_includes_16.0_-_16.10 >= 16.11.0 < 16.11.8`\n- `visual_studio_2022_version_17.0 >= 17.0.0 < 17.0.3`\n- `asp.net_core_3.1 >= 3.0 < 3.1.22`\n- `asp.net_core_5.0 >= 5.0 < 5.0.13`\n- `asp.net_core_6.0 >= 6.0 < 6.0.101`\n- `visual_studio_2022_version_17.1 >= 17.0.0 < 17.1.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}