CVE-2025-66277

CRITICAL

9.8

Description

A link following vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to traverse the file system to unintended locations. We have already fixed the vulnerability in the following versions: QTS 5.2.8.3350 build 20251216 and later QuTS hero h5.3.2.3354 build 20251225 and later QuTS hero h5.2.8.3350 build 20251216 and later

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/11/2026

Last Modified2/12/2026

Sourcenvd

Honeypot Sightings0

Affected Products

qnap:qtsqnap:quts_hero

Weaknesses (CWE)

CWE-59

References

https://www.qnap.com/en/security-advisory/qsa-26-05(security@qnapsecurity.com.tw)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.