What is CVE-2025-55247?

CVE-2025-55247 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. .NET Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2025-55247 cover?

CVE-2025-55247 covers the following CVE IDs: CVE-2025-55247. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-55247?

CVE-2025-55247 has a CVSS v3 base score of 7.3, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-55247?

CVE-2025-55247 affects 2 products, including: .NET 8.0 installed on Linux; .NET 9.0 installed on Linux.

CVE-2025-55247HighCVSS 7.3

.NET Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 14, 2025

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2025-55247 →

📋 Description

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

🎯 Affected products2

.NET 8.0 installed on Linux
.NET 9.0 installed on Linux

✅ Remediation

KB5068331 (Security Update) — fixed build 8.0.21 KB5068332 (Security Update) — fixed build 9.0.10

🔗 References (5)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55247
patchhttps://dotnet.microsoft.com/en-us/download/dotnet/8.0
referencehttps://support.microsoft.com/help/5068331
patchhttps://dotnet.microsoft.com/en-us/download/dotnet/9.0
referencehttps://support.microsoft.com/help/5068332