CVE-2021-43877
At a glance
- Severity
- HIGH 8.8
- EPSS
- EPSS 0.73 % · percentile 54 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Modified
Description
ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | 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 | microsoft |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | NVD · secure@microsoft.com (Secondary) |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Secondary) |
| CVSS 2.0 | MEDIUM 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-30739
- GCVE · GCVE-0-2021-43877
CERT-FR advisories
- CERTFR-2021-AVI-961 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
- CERTFR-2021-AVI-960 — Multiples vulnérabilités dans Microsoft .Net · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:asp.net_core:5.0:*:*:*:*:*:*:*cpe:2.3:a:microsoft:asp.net_core:6.0:*:*:*:*:*:*:*cpe:2.3:a:microsoft:visual_studio_2019:16.7:*:*:*:*:*:*:*cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*cpe:2.3:a:microsoft:visual_studio_2019:16.11:*:*:*:*:*:*:*cpe:2.3:a:microsoft:visual_studio_2022:17.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| 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 |
| Microsoft · ASP.NET Core 3.1 | affected 3.0 < 3.1.22 |
| Microsoft · ASP.NET Core 5.0 | affected 5.0 < 5.0.13 |
| Microsoft · ASP.NET Core 6.0 | affected 6.0 < 6.0.101 |
| Microsoft · Microsoft Visual Studio 2022 version 17.1 | affected 17.0.0 < 17.1.4 |
References
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |