CVE-2026-13639
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductDiskStation Manager (DSM)
PublishedSep 18, 2026
First seenSep 18, 2026
Weakness typeCWE-331CWE-331
How to fix
Update
- Synology DiskStation Manager (DSM)7.4-90075, 7.3.2-86009-4, 7.2.2-72806-9, 7.2.1-69057-12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Synology DiskStation Manager (DSM) | 7.4 ≤ v < 7.4-90075, 7.3.2 ≤ v < 7.3.2-86009-4, 7.2.2 ≤ v < 7.2.2-72806-9, 7.2.1 ≤ v < 7.2.1-69057-12 | 7.4-90075, 7.3.2-86009-4, 7.2.2-72806-9, 7.2.1-69057-12 |
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