Vulnerability · Published Sep 15, 2021 · Assigned by microsoft
CVE-2021-26434Visual Studio Elevation of Privilege Vulnerability
High 7.8
In plain English
A high-severity security flaw in Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.9%top 40.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Visual Studio Elevation of Privilege Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) | 15.9.0 – before 15.9.39 |
| Microsoft | Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10) | 16.11.0 – before 16.11.3 |
| Microsoft | Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) | 16.0 – before 16.4.26 |
| Microsoft | Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) | 16.0.0 – before 16.7.19 |
| Microsoft | Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) | 15.0.0 – before 16.9.11 |
References
- Visual Studio Elevation of Privilege Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26434 x_refsource_MISC, x_transferred
- https://www.zerodayinitiative.com/advisories/ZDI-21-1077/ x_refsource_MISC, x_transferred