CVE-2025-29843

Name: CVE-2025-29843
Creator: NVD / NIST
Published: 2025-12-04T15:15:56.287+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2025-29843 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A vulnerability in FileStation thumb cgi allows remote authenticated users to read/write image files.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

A vulnerability in FileStation thumb cgi allows remote authenticated users to read/write image files.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.35%

26.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Synology	Router Manager	>= 1.3, < 1.3.1-9346
Synology	Router Manager	1.3.1-9346

References

https://www.synology.com/en-global/security/advisory/Synology_SA_25_04Vendor Advisory

Timeline

Published: Dec 4, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-29843?

A vulnerability in FileStation thumb cgi allows remote authenticated users to read/write image files.

How severe is CVE-2025-29843?

CVE-2025-29843 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2025-29843?

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-2025-29843?

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

Scan your code now

Source: NVD / NIST