CVE-2025-30270: QTS, QuTS hero

Vulnerability summary

CVE-2025-30270 is a medium (CVSS 6.5) Path Traversal vulnerability in qnap systems inc. qts. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41% of scored vulnerabilities.

Timeline

1. 29-08-2025
   PublishedVulnerability first disclosed.
2. 29-08-2025
   Last modifiedVulnerability information updated.

Description

A path traversal vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following versions: QTS 5.2.5.3145 build 20250526 and later QuTS hero h5.2.5.3138 build 20250519 and later

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.