CVE-2021-26434: Visual Studio Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7.8)

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2021-Sep

Released

2021-09-14

EPSS Score

0.44% (percentile: 63.0%)

Affected Products (5)

Developer Tools

• Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)
• Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)
• Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)
• Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)
• Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)

Security Updates (5)

• Release Notes
• Release Notes
• Release Notes
• Release Notes
• Release Notes

Acknowledgments

Michael DePlante (@izobashi) of <a href="https://www.zerodayinitiative.com/">Trend Micro Zero Day Initiative</a>

Revision History

• 2021-09-14: Information published.