Synology DSM SSO Auth Bypass (<=7.2.2, <=7.3.1)
CVE-2025-13392 Published on May 27, 2026
Improper check for unusual or exceptional conditions vulnerability in SSO in Synology DiskStation Manager (DSM) before 7.2.2-72806-5 and 7.3.1-86003-1 (7.2.1-69057 is not affected) allows remote attackers to bypass authentication with prior knowledge of the distinguished name (DN).
Vulnerability Analysis
CVE-2025-13392 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
Improper Check for Unusual or Exceptional Conditions
The software does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the software.
Products Associated with CVE-2025-13392
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Affected Versions
Synology DiskStation Manager (DSM):- Version 7.3 and below 7.3.1-86003-1 is affected.
- Version 7.2.2 and below 7.2.2-72806-5 is affected.
- Version 7.2.1 and below 7.2.1.* is unaffected.
- Before 7.2.1 is unknown.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.