CVE-2021-33184

Name: CVE-2021-33184
Creator: NVD / NIST
Published: 2021-06-01T14:15:10.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.7/10EPSS 1.00%

Last modified Jun 17, 2026

CVE-2021-33184 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. Server-Side request forgery (SSRF) vulnerability in task management component in Synology Download Station before 3.8.15-3563 allows remote authenticated users to read arbitrary files via unspecified vectors.. EPSS estimates a 1.00% chance of exploitation in the next 30 days.

Description

Server-Side request forgery (SSRF) vulnerability in task management component in Synology Download Station before 3.8.15-3563 allows remote authenticated users to read arbitrary files via unspecified vectors.

Metrics

CVSS 3.1

7.7/10

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

EPSS Probability

1.00%

58.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Synology	Download Station	< 3.8.15-3563

References

https://www.synology.com/security/advisory/Synology_SA_20_23Vendor Advisory
https://www.synology.com/security/advisory/Synology_SA_20_23Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-33184?

How severe is CVE-2021-33184?

CVE-2021-33184 has a CVSS score of 7.7/10 (HIGH severity). The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33184?

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-2021-33184?

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

Scan your code now

Source: NVD / NIST