CVE Vulnerabilities

CVE-2025-21195

Improper Link Resolution Before File Access ('Link Following')

Published: Jul 08, 2025 | Modified: Jul 22, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

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

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Name Vendor Start Version End Version
Azure_service_fabric Microsoft * 10.1 (excluding)
Azure_service_fabric Microsoft 10.1 (including) 10.1 (including)
Azure_service_fabric Microsoft 10.1-cumulative_update_2 (including) 10.1-cumulative_update_2 (including)
Azure_service_fabric Microsoft 10.1-cumulative_update_3 (including) 10.1-cumulative_update_3 (including)
Azure_service_fabric Microsoft 10.1-cumulative_update_4 (including) 10.1-cumulative_update_4 (including)
Azure_service_fabric Microsoft 10.1-cumulative_update_5 (including) 10.1-cumulative_update_5 (including)
Azure_service_fabric Microsoft 10.1-cumulative_update_6 (including) 10.1-cumulative_update_6 (including)

Potential Mitigations

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

References