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CVE-2025-66592

MEDIUMCVSS 5.6/10EPSS 0.09%

Last modified

CVE-2025-66592 is a medium-severity vulnerability rated 5.6/10 on the CVSS scale. An origin validation error vulnerability in Synology Active Backup for Business Agent before 3.1.0-4967 allows local users to write arbitrary files with restricted content and conduct denial-of-service during installation.. EPSS estimates a 0.09% chance of exploitation in the next 30 days.

Description

An origin validation error vulnerability in Synology Active Backup for Business Agent before 3.1.0-4967 allows local users to write arbitrary files with restricted content and conduct denial-of-service during installation.

Metrics

CVSS 3.1
5.6/10

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

EPSS Probability
0.09%

0.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
SynologyActive Backup For Business Agent< 3.1.0-4967

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2025-66592?
An origin validation error vulnerability in Synology Active Backup for Business Agent before 3.1.0-4967 allows local users to write arbitrary files with restricted content and conduct denial-of-service during installation.
How severe is CVE-2025-66592?
CVE-2025-66592 has a CVSS score of 5.6/10 (MEDIUM severity). The EPSS model estimates a 0.09% probability of exploitation in the next 30 days.
How do I fix CVE-2025-66592?
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-2025-66592?

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

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Source: NVD / NIST