Is CVE-2025-21171 actively exploited?

CVE-2025-21171 has no public evidence of in-the-wild exploitation as of 2025-07-10.

What is the CVSS score for CVE-2025-21171?

CVE-2025-21171 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

How do I patch CVE-2025-21171?

Patch guidance is available from microsoft security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-21171.

Fix CVE-2025-21171 - HIGH microsoft .net

Q: Which products are affected by CVE-2025-21171?

6 products: microsoft .net, microsoft powershell, microsoft visual studio 2022, microsoft visual studio 2022, microsoft visual studio 2022, and 1 more.

Description

.NET Remote Code Execution Vulnerability

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: high
Privileges: none
User Action: required
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-122NVD-CWE-noinfo

Metadata

Primary Vendor: MICROSOFT
Published: 1/14/2025
Last Modified: 7/10/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

microsoft : .netmicrosoft : powershellmicrosoft : visual_studio_2022microsoft : visual_studio_2022microsoft : visual_studio_2022microsoft : visual_studio_2022

Remediation Guidance

Executive Summary

View on NIST NVD