CVE-2021-33182

Name: CVE-2021-33182
Creator: NVD / NIST
Published: 2021-06-01T14:15:10.147+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 1.11%

Last modified Jun 17, 2026

CVE-2021-33182 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in PDF Viewer component in Synology DiskStation Manager (DSM) before 6.2.4-25553 allows remote authenticated users to read limited files via unspecified vectors.. EPSS estimates a 1.11% chance of exploitation in the next 30 days.

Description

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in PDF Viewer component in Synology DiskStation Manager (DSM) before 6.2.4-25553 allows remote authenticated users to read limited files via unspecified vectors.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

1.11%

61.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Synology	Diskstation Manager	< 6.2.4-25553

References

https://www.synology.com/security/advisory/Synology_SA_21_03Not Applicable, Vendor Advisory
https://www.synology.com/security/advisory/Synology_SA_21_03Not Applicable, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-33182?

How severe is CVE-2021-33182?

CVE-2021-33182 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 1.11% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33182?

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-2021-33182?

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

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Source: NVD / NIST