CVE-2021-43877
highASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
Vendor / product: Microsoft — asp.net core
ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
CVSS
8.8
8.8 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (secure@microsoft.com)
Timeline (UTC)
Published: 2021-12-15 15:15
Modified: 2026-11-02 19:17
NVD status: Modified
Last synced 1 day ago
Verified against the source API 2026-11-03 07:33 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
microsoft / asp.net_core 3.1, 5.0, 6.0
microsoft / visual_studio_2019 16.7, 16.9, 16.11
microsoft / visual_studio_2022 17.0
Weakness classification (CWE)
NVD-CWE-noinfo
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877 secure@microsoft.com
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877 af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 07:33 UTC · record ↗