GHSA-rg75-q538-x34v: Microsoft.NetCore.App.Runtime.win-arm (CVE-2026-32175)

Microsoft Security Advisory CVE-2026-32175 – .NET Core Tampering Vulnerability

CVSS 4.3 MediumEPSS 0.0071 · 53rd percentile

Published by the GitHub Advisory Database at 18 May 2026, 19:08 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
Microsoft.NetCore.App.Runtime.win-arm	NuGet	>=8.0.0, <8.0.27 \|\| >=9.0.0, <9.0.16 \|\| >=10.0.0, <10.0.8	8.0.27, 9.0.16, 10.0.8
Microsoft.NetCore.App.Runtime.win-arm64	NuGet	>=8.0.0, <8.0.27 \|\| >=9.0.0, <9.0.16 \|\| >=10.0.0, <10.0.8	8.0.27, 9.0.16, 10.0.8
Microsoft.NetCore.App.Runtime.win-x64	NuGet	>=8.0.0, <8.0.27 \|\| >=9.0.0, <9.0.16 \|\| >=10.0.0, <10.0.8	8.0.27, 9.0.16, 10.0.8
Microsoft.NetCore.App.Runtime.win-x86	NuGet	>=8.0.0, <8.0.27 \|\| >=9.0.0, <9.0.16 \|\| >=10.0.0, <10.0.8	8.0.27, 9.0.16, 10.0.8

Identifiers

GHSA-rg75-q538-x34v · BIT-dotnet-2026-32175 · BIT-dotnet-sdk-2026-32175 · CVE-2026-32175

Weakness (CWE)

CWE-22 · CWE-36

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Microsoft.NetCore.App.Runtime packages for win-x64, win-x86, win-arm and win-arm64 are affected in .NET 8.0 before 8.0.27, .NET 9.0 before 9.0.16, and .NET 10.0 before 10.0.8. An attacker who can send a specially crafted file to a vulnerable Windows system can write arbitrary files and directories to certain locations, with limited control over the destination. Upgrade to 8.0.27, 9.0.16, or 10.0.8, as appropriate.

Written 9 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
4.3	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C	CNA (microsoft)

CISA KEV Not listed.
EPSS 0.0071, the 53rd percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

12 May 2026, 18:01 UTC Published by the maintainers as a GitHub repository advisory
31 Oct 2026, 15:22 UTC First seen by agentprime
31 Oct 2026, 15:22 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.