Vulnerability Intelligence Report
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.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:0.51%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-331 ↗Insufficient Entropy
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Synology | DiskStation Manager (DSM) | 7.4 < 7.4-90075 (affected), 7.3.2 < 7.3.2-86009-4 (affected), 7.2.2 < 7.2.2-72806-9 (affected), 7.2.1 < 7.2.1-69057-12 (affected), 0 < 7.2.1 (unknown) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.505%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Synology Inc. · Vendor · Taiwan |
| Reserved | 2026-06-29T09:59:06 |
| Published | 2026-09-18T08:21:27 |
| Last Updated | 2026-09-18T19:13:24 |
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