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CVE-2025-26646

.NET, Visual Studio, and Build Tools for Visual Studio Spoofing Vulnerability

HIGH
8
CVSS Score
Published: May 13, 2025 at 09:39 PM UTC
Updated: June 17, 2026 at 09:02 AM UTC
4 products affected across 1 vendorVisual Studio 2022.netBuild Tools· also runs on 2 platforms

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Severity
HIGH8
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Build Tools· Microsoft
95%
v < 17.13.717.0 ≤ v < Fixed Version 17.13.717.0
Affected range stops below 17.13.7, so it looks safe — our inference, not a vendor statement
Affected range stops below Fixed Version 17.13.7, so it looks safe — our inference, not a vendor statement
.net· Microsoft
95%
8.0.0 ≤ v < 8.0.169.0.0 ≤ v < 9.0.58.0.09.0.0
Affected range stops below 8.0.16, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.5, so it looks safe — our inference, not a vendor statement
apple-macos (environment) · linux-linux-kernel (environment) · microsoft-windows (environment)
Visual Studio 2022· Microsoft
95%
17.10.0 ≤ v < 17.10.1517.12.0 ≤ v < 17.12.817.13.0 ≤ v < 17.13.717.8.0 ≤ v < 17.8.2117.10.017.12.017.13.017.8.0
Affected range stops below 17.10.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 17.12.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 17.13.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 17.8.21, so it looks safe — our inference, not a vendor statement
Windows· Microsoftdevice
80%
All versions

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26646

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8HIGHmicrosoft
Vector?

Quick Info

StatusANALYZED
CWE
CWE-73

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