CVE-2021-43877
ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
Timeline
ID reserved
By microsoft
- 29 days later
· 29 days later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | High8.8 | 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 |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.73% · top 45% of all CVEs (8 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Weakness
- Elevation of Privilege
Affected products
Microsoft · Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)
- affected 16.0.0 – < 16.7.23
Microsoft · Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)
- affected 15.0.0 – < 16.9.15
Microsoft · Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)
- affected 16.11.0 – < 16.11.8
Microsoft · Microsoft Visual Studio 2022 version 17.0
- affected 17.0.0 – < 17.0.3
- affected 3.0 – < 3.1.22
- affected 5.0 – < 5.0.13
- affected 6.0 – < 6.0.101
Microsoft · Microsoft Visual Studio 2022 version 17.1
- affected 17.0.0 – < 17.1.4
References (1)
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-43877)Record last updated .