CVE-2026-13639

CRITICALCVSS 9.8/10

Last modified

CVE-2026-13639 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An insufficient entropy vulnerability in login logic in Synology DiskStation Manager (DSM) before 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4 and 7.4-90075 allows remote attackers to read or write arbitrary files and conduct denial-of-service attacks..

Description

An insufficient entropy vulnerability in login logic in Synology DiskStation Manager (DSM) before 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4 and 7.4-90075 allows remote attackers to read or write arbitrary files and conduct denial-of-service attacks.

Metrics

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
SynologyDiskStation Manager (DSM)>= 7.4, < 7.4-90075; >= 7.3.2, < 7.3.2-86009-4; >= 7.2.2, < 7.2.2-72806-9; >= 7.2.1, < 7.2.1-69057-12; < 7.2.1

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-13639?
An insufficient entropy vulnerability in login logic in Synology DiskStation Manager (DSM) before 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4 and 7.4-90075 allows remote attackers to read or write arbitrary files and conduct denial-of-service attacks.
How severe is CVE-2026-13639?
CVE-2026-13639 has a CVSS score of 9.8/10 (CRITICAL severity).
How do I fix CVE-2026-13639?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST