CVE-2021-26423
En bref
- Sévérité
- HIGH 7.5
- EPSS
- EPSS 3.90 % · centile 90 (2026-10-27)
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- microsoft
- Statut NVD
- Modified
Description
.NET Core and Visual Studio Denial of Service Vulnerability
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C | microsoft |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · secure@microsoft.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Secondary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
Avis
- GHSA-rh58-r7jh-xhx3 — .NET Core Elevation of Privilege Vulnerability
Références européennes
- ENISA EUVD · EUVD-2022-7160
- GCVE · GCVE-0-2021-26423
Avis du CERT-FR
- CERTFR-2021-AVI-620 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
- CERTFR-2021-AVI-619 — Multiples vulnérabilités dans Microsoft .Net · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*≥ 5.0 ≤ 5.0.8cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*≥ 2.1 ≤ 2.1.28cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*≥ 3.1 ≤ 3.1.17cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*≥ 7.0 < 7.0.7cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*≥ 7.1 < 7.1.4cpe:2.3:a:microsoft:visual_studio_2017:*:*:*:*:*:*:*:*≥ 15.0 ≤ 15.9cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*≥ 16.0 ≤ 16.10cpe:2.3:a:microsoft:visual_studio_2019:8.10:*:*:*:*:macos:*:*
Produits affectés
| Produit | Versions |
|---|---|
| Microsoft · .NET 5.0 | affected 5.0.0 < 5.0.9 |
| Microsoft · .NET Core 2.1 | affected 2.1 < 2.1.30 |
| Microsoft · .NET Core 3.1 | affected 3.1 < 3.1.18 |
| Microsoft · Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) | affected 15.9.0 < 15.9.38 |
| Microsoft · Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9) | affected 16.10.0 < 16.10.5 |
| Microsoft · Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) | affected 16.0 < 16.4.25 |
| Microsoft · Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) | affected 16.0.0 < 16.7.18 |
| Microsoft · Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) | affected 15.0.0 < 16.9.10 |
| Microsoft · PowerShell Core 7.0 | affected 7.0.0 < 7.0.7 |
| Microsoft · PowerShell Core 7.1 | affected 7.1.0 < 7.1.4 |
| Microsoft · Visual Studio 2019 for Mac version 8.10 | affected 8.1.0 < 8.10.7 |
Références
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26423
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26423
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 |