.NET, Visual Studio, and Build Tools for Visual Studio
CVE-2025-26646 — .NET, Visual Studio, and Build Tools for Visual Studio Spoofing Vulnerability
Executive Summary
External control of file name or path in .NET, Visual Studio, and Build Tools for Visual Studio allows an authorized attacker to perform spoofing over a network.
Overview
8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Exploitation Unlikely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
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: 7.0
EPSS Score
0.011
probability of exploitation in the next 30 days
0.62273 percentile - updated 2026-07-25
View on FIRST.org
Affected Products
11 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| .NET 8.0 installed on Linux | 5059200 (Security Update) |
Important | Spoofing | Maybe |
| .NET 8.0 installed on Mac OS | 5059200 (Security Update) |
Important | Spoofing | Maybe |
| .NET 8.0 installed on Windows | 5059200 (Security Update) |
Important | Spoofing | Maybe |
| .NET 9.0 installed on Linux | 5059201 (Security Update) |
Important | Spoofing | Maybe |
| .NET 9.0 installed on Mac OS | 5059201 (Security Update) |
Important | Spoofing | Maybe |
| .NET 9.0 installed on Windows | 5059201 (Security Update) |
Important | Spoofing | Maybe |
| Build Tools for Visual Studio 2022 | Release Notes (Security Update) |
Important | Spoofing | Maybe |
| Microsoft Visual Studio 2022 version 17.10 | Release Notes (Security Update) |
Important | Spoofing | Maybe |
| Microsoft Visual Studio 2022 version 17.12 | Release Notes (Security Update) |
Important | Spoofing | Maybe |
| Microsoft Visual Studio 2022 version 17.13 | Release Notes (Security Update) |
Important | Spoofing | Maybe |
| Microsoft Visual Studio 2022 version 17.8 | Release Notes (Security Update) |
Important | Spoofing | Maybe |
Patches
3 patches
| Article | Type | Restart |
|---|---|---|
5059200 |
Security Update | Maybe |
5059201 |
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
Microsoft has not published researcher acknowledgments for this CVE, or they are not yet reflected in our data source. Check the MSRC advisory directly for the most current credit information.
References
On This Page