CVE-2021-33181

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-06-01 · updated 2026-06-17
Weakness: CWE-918

Description

Server-Side Request Forgery (SSRF) vulnerability in webapi component in Synology Video Station before 2.4.10-1632 allows remote authenticated users to send arbitrary request to intranet resources via unspecified vectors.

Affected products

Synology Video Station: before 2.4.10-1632 — fixed in 2.4.10-1632

How to fix

Upgrade to a fixed version: Synology Video Station 2.4.10-1632. Check the vendor advisory for mitigations.

References

https://www.synology.com/security/advisory/Synology_SA_21_04
https://www.synology.com/security/advisory/Synology_SA_21_04

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