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CVE-2021-42319: Visual Studio Elevation of Privilege Vulnerability

• Severity: low (CVSS 2.1 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-10 · updated 2026-08-19
• Weakness: CWE-269

Description

Visual Studio Elevation of Privilege Vulnerability

Affected products

• Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8): from 15.0 through 15.9
• Microsoft Visual Studio 2019: from 16.0 through 16.11
• Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10): from 16.11.0 before 16.11.6 — fixed in 16.11.6
• Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6): from 16.0.0 before 16.7.21 — fixed in 16.7.21
• Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8): from 15.0.0 before 16.9.13 — fixed in 16.9.13
• Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8): from 15.9.0 before 15.9.41 — fixed in 15.9.41

How to fix

Upgrade to a fixed version: Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10) 16.11.6; Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) 16.7.21; Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) 16.9.13; Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) 15.9.41. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42319
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42319

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