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Vulnerability record · CVE-2026-13639 · published 18 September 2026

CVE-2026-13639: An insufficient entropy vulnerability in login logic in Synology DiskStation Manager (DSM) before 7.2.1-69057-…

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.

9.8 CVSS 3.1 Critical EPSS 0.66% · top 50.2% CWE-331 · CWE-331 Awaiting Analysis
9.8CVSS 3.1 base score
0.66%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
18 Sep 2026Last modified by NVD

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.

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

References

LinkTags
https://www.synology.com/en-global/security/advisory/Synology_SA_26_13

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Source: NIST National Vulnerability Database (record CVE-2026-13639), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.