What’s Vulnerable › Vulnerabilities
CVE-2025-53729: Microsoft Azure File Sync Elevation of Privilege Vulnerability
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-08-12 · updated 2026-06-17
- Weakness: CWE-284
Description
Improper access control in Azure File Sync allows an authorized attacker to elevate privileges locally.
Affected products
- Microsoft Azure File Sync: from 18.0.0.0 before 18.3.0.0; from 19.0.0.0 before 19.2.0.0; from 20.0.0.0 before 20.1.0.0; from 21.0.0.0 through 21.1.0.0 — fixed in 18.3.0.0, 19.2.0.0, 20.1.0.0
- Microsoft Azure File Sync: from 1.0.0 before 18.3.0.0 — fixed in 18.3.0.0
How to fix
Upgrade to a fixed version: Microsoft Azure File Sync 18.3.0.0, 19.2.0.0, 20.1.0.0; Microsoft Azure File Sync 18.3.0.0. Check the vendor advisory for mitigations.
References
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