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 allo…

published 2026-11-12 7h ago modified 2026-11-12 6h ago also EUVD-2026-124202

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: —; no EPSS score yet
public exploits: 0; none known

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.

Patch / fix

fixed in 1

Synology DiskStation Manager (DSM) 7.3.2-86009-5, 7.4.1-90080-1

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CVSS scores

assigned by	version	score	vector
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected products

Synology DiskStation Manager (DSM)

Classification

Weakness

CWE-862 Missing Authorization

References

synology.com /en-global/security/advisory/Synology_SA_26_18

Sources

CVE List CVE-2026-81558
NVD CVE-2026-81558

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