What’s Vulnerable › Vulnerabilities

CVE-2021-41355: .NET Core and Visual Studio Information Disclosure Vulnerability

• Severity: low (CVSS 2.9 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 20.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-13 · updated 2026-06-17

Description

.NET Core and Visual Studio Information Disclosure Vulnerability

Affected products

• Microsoft .NET: 5.0
• Microsoft Powershell: from 7.1 before 7.1.5 — fixed in 7.1.5
• Microsoft Visual Studio 2019: from 16.0 through 16.11
• Microsoft .NET 5.0: from 5.0.0 before 5.0.11 — fixed in 5.0.11
• Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10): from 16.11.0 before 16.11.5 — fixed in 16.11.5
• Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8): from 15.0.0 before 16.9.12 — fixed in 16.9.12
• Microsoft PowerShell 7.1: from 7.1.0 before 7.1.5 — fixed in 7.1.5

How to fix

Upgrade to a fixed version: Microsoft Powershell 7.1.5; Microsoft .NET 5.0 5.0.11; Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10) 16.11.5; Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) 16.9.12; Microsoft PowerShell 7.1 7.1.5. Check the vendor advisory for mitigations.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41355
• https://www.oracle.com/security-alerts/cpujan2022.html
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41355
• https://www.oracle.com/security-alerts/cpujan2022.html

Get alerted when CVE-2021-41355 or the next vulnerability affects your stack