CVE-2026-81558
MEDIUMCVSS 4.3/10EPSS 0.40%
Last modified
CVE-2026-81558 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A missing authorization vulnerability in the SocketIo API in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to write specific files.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
Description
A missing authorization vulnerability in the SocketIo API in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to write specific files.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Synology | DiskStation Manager (DSM) | >= 7.4.1, < 7.4.1-90080-1; >= 7.3.2, < 7.3.2-86009-5; < 7.3.2 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-81558?
A missing authorization vulnerability in the SocketIo API in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to write specific files.
How severe is CVE-2026-81558?
CVE-2026-81558 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.
How do I fix CVE-2026-81558?
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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Are you affected by CVE-2026-81558?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST