CVE-2025-21195: Critical Azure Service Fabric Privilege Escalation Vulnerability

Here is a summary of CVE-2025-21195:

• Title: Azure Service Fabric Runtime Elevation of Privilege Vulnerability
• CVE ID: CVE-2025-21195
• Description: There is an elevation of privilege vulnerability in Azure Service Fabric Runtime caused by improper link resolution before file access ("link following"). This means that a local, authorized attacker could potentially exploit the way Service Fabric handles file links to gain elevated privileges on the affected system.
• Severity: The specific CVSS score and affected versions are not provided in your information, but such vulnerabilities are typically rated as important or critical due to the possibility of privilege escalation.
• Impact: An attacker who successfully exploited this vulnerability could run processes in the context of another user, potentially gaining unauthorized access or control within the Service Fabric cluster.
• Mitigation/Recommendation: Users should apply the appropriate security updates provided by Microsoft as soon as they become available. For the most accurate and detailed guidance, refer directly to the Microsoft Security Response Center (MSRC) link you provided: MSRC CVE-2025-21195.

If you need more technical details, exploitation scenarios, or patch information, please check the official MSRC advisory or let me know if you want a more technical breakdown.

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Source: MSRC Security Update Guide - Microsoft Security Response Center