CVE-2021-33181

Name: CVE-2021-33181
Creator: NVD / NIST
Published: 2021-06-01T14:15:10.11+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.97%

Last modified Jun 17, 2026

CVE-2021-33181 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. EPSS estimates a 0.97% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

0.97%

57.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Synology	Video Station	< 2.4.10-1632

References

https://www.synology.com/security/advisory/Synology_SA_21_04Vendor Advisory
https://www.synology.com/security/advisory/Synology_SA_21_04Vendor Advisory

Timeline

Published: Jun 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33181?

How severe is CVE-2021-33181?

CVE-2021-33181 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.97% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33181?

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.

Are you affected by CVE-2021-33181?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST