CVE-2021-26701
At a glance
- Severity
- HIGH 8.1
- EPSS
- EPSS 30.10 % · percentile 98 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Modified
Description
.NET Core Remote Code Execution Vulnerability
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C | microsoft |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · secure@microsoft.com (Secondary) |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Secondary) |
| CVSS 2.0 | HIGH 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-ghhp-997w-qr28 — .NET Core Remote Code Execution Vulnerability
European references
- ENISA EUVD · EUVD-2021-0826
- GCVE · GCVE-0-2021-26701
CERT-FR advisories
- CERTFR-2021-AVI-621 — Multiples vulnérabilités dans les produits Palo Alto Networks · cert.ssi.gouv.fr
- CERTFR-2021-AVI-106 — Multiples vulnérabilités dans Microsoft .Net · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*≥ 5.0 < 5.0.4cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*≥ 2.1 < 2.1.28cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*≥ 3.1 < 3.1.15cpe:2.3:a:microsoft:powershell_core:7.0:*:*:*:*:*:*:*cpe:2.3:a:microsoft:powershell_core:7.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*≥ 16.0 ≤ 16.9cpe:2.3:a:microsoft:visual_studio_2019:-:*:*:*:*:macos:*:*cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Microsoft · .NET Core 2.1 | affected 2.1 < publication |
| Microsoft · .NET Core 3.1 | affected 3.1 < publication |
| Microsoft · .NET 5.0 | affected 5.0.0 < publication |
| Microsoft · Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) | affected 16.0 < publication |
| Microsoft · Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) | affected 15.9.0 < publication |
| Microsoft · Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) | affected 16.0.0 < publication |
| Microsoft · Visual Studio 2019 for Mac | affected 8.0.0 < publication |
| Microsoft · Microsoft Visual Studio 2019 version 16.8 (includes 16.0 - 16.7) | affected 16.0 < publication |
| Microsoft · Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) | affected 15.0.0 < publication |
| Microsoft · PowerShell Core 7.1 | affected 7.1.0 < publication |
| Microsoft · PowerShell Core 7.0 | affected 7.0.0 < publication |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26701
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XPUKFHIGP5YNJRRFWKDJ2XRS4WTFJNNK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TW3ZSJTTMZAFKGW7NJWTVVFZUYYU2SJZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WA5WQJVHUL5C4XMJTLY3C67R4WP35EF4/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YLFATXASXW4OV2ZBSRP4G55HJH73QPBP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBOSSX7U6BSHV5RI74FCOW4ITJ5RRJR5/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2AZOUKMCHT2WBHR7MYDTYXWOBHZW5P5/
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 |