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Description

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).

PUBLISHED Reserved 2025-11-19 | Published 2026-05-27 | Updated 2026-05-27 | Assigner synology




HIGH: 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

Improper Check for Unusual or Exceptional Conditions

Product status

Default status
affected

7.3 (semver) before 7.3.1-86003-1
affected

7.2.2 (semver) before 7.2.2-72806-5
affected

7.2.1 (semver) before 7.2.1.*
unaffected

Any version before 7.2.1
unknown

Credits

Le Trong Phuc (chanze@VRC) and Cao Ngoc Quy (Chino Kafuu) finder

References

www.synology.com/...obal/security/advisory/Synology_SA_25_14 (Synology-SA-25:14 DSM (PWN2OWN 2025)) vendor-advisory

cve.org (CVE-2025-13392)

nvd.nist.gov (CVE-2025-13392)

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