CVE-2025-66277

EUVD-2025-207017
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
Link Following
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 24%
Affected Products (NVD)
VendorProductVersion
qnapqts
5.2.0.2737:build_20240417
qnapqts
5.2.0.2744:build_20240424
qnapqts
5.2.0.2782:build_20240601
qnapqts
5.2.0.2802:build_20240620
qnapqts
5.2.0.2823:build_20240711
qnapqts
5.2.0.2851:build_20240808
qnapqts
5.2.0.2860:build_20240817
qnapqts
5.2.1.2930:build_20241025
qnapqts
5.2.2.2950:build_20241114
qnapqts
5.2.3.3006:build_20250108
qnapqts
5.2.4.3070:build_20250312
qnapqts
5.2.4.3079:build_20250321
qnapqts
5.2.4.3092:build_20250403
qnapqts
5.2.5.3145:build_20250526
qnapqts
5.2.6.3195:build_20250715
qnapqts
5.2.6.3229:build_20250818
qnapqts
5.2.7.3256:build_20250913
qnapqts
5.2.7.3297:build_20251024
qnapqts
5.2.8.3332:build_20251128
𝑥
= Vulnerable software versions
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://www.qnap.com/en/security-advisory/qsa-26-05