Forwarded from National Cybersecurity Information Sharing and Analysis Center: Cybersecurity Alert NISAC-200-202603-00000014

[Content Description]
Researchers have discovered a link following vulnerability (CVE-2025-66277) in the QNAP operating system. Unauthenticated remote attackers could exploit this vulnerability to access unauthorized file system paths. Please confirm and patch it as soon as possible.

[Affected Platforms]
QTS versions 5.2.x to 5.2.8.3350 build 20251216 (excluding)
QTS hero versions h5.2.x to h5.2.8.3350 build 20251216 (excluding)

[Recommended Actions]
The official patch has been released. Please refer to the official instructions for updating. The URL is as follows: https://www.qnap.com/en/security-advisory/qsa-26-05

[References]
1. https://nvd.nist.gov/vuln/detail/CVE-2025-66277