.NET
CVE-2025-21173 — .NET Elevation of Privilege Vulnerability
Executive Summary
None
Overview
7.3
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.4
EPSS Score
0.01218
probability of exploitation in the next 30 days
0.64687 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
6 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| .NET 8.0 installed on Linux | 5050525 (Security Update) |
Important | Elevation of Privilege | Maybe |
| .NET 9.0 installed on Linux | 5050526 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft Visual Studio 2022 version 17.10 | Release Notes (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft Visual Studio 2022 version 17.12 | Release Notes (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft Visual Studio 2022 version 17.6 | Release Notes (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft Visual Studio 2022 version 17.8 | Release Notes (Security Update) |
Important | Elevation of Privilege | Maybe |
Patches
3 patches
| Article | Type | Restart |
|---|---|---|
5050525 |
Security Update | Maybe |
5050526 |
Security Update | Maybe |
Release Notes |
Security Update | Maybe |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Noah Gilson with Microsoft, Daniel Plaisted with Microsoft
References
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