CVE-2025-66277
CRITICAL EPSS 45.8%
Published Feb 11, 20264mo ago · Modified Jun 17, 20261w ago
9.2 CVSS 4.0
Published Feb 11, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago
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
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
45.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-59
Affected Products 37
| Vendor | Product | Version | Range |
|---|---|---|---|
| qnap | qts | 5.2.0.2737 | any |
| qnap | qts | 5.2.0.2744 | any |
| qnap | qts | 5.2.0.2782 | any |
| qnap | qts | 5.2.0.2802 | any |
| qnap | qts | 5.2.0.2823 | any |
| qnap | qts | 5.2.0.2851 | any |
| qnap | qts | 5.2.0.2860 | any |
| qnap | qts | 5.2.1.2930 | any |
| qnap | qts | 5.2.2.2950 | any |
| qnap | qts | 5.2.3.3006 | any |
| qnap | qts | 5.2.4.3070 | any |
| qnap | qts | 5.2.4.3079 | any |
| qnap | qts | 5.2.4.3092 | any |
| qnap | qts | 5.2.5.3145 | any |
| qnap | qts | 5.2.6.3195 | any |
| qnap | qts | 5.2.6.3229 | any |
| qnap | qts | 5.2.7.3256 | any |
| qnap | qts | 5.2.7.3297 | any |
| qnap | qts | 5.2.8.3332 | any |
| qnap | quts_hero | h5.2.0.2737 | any |
| qnap | quts_hero | h5.2.0.2782 | any |
| qnap | quts_hero | h5.2.0.2789 | any |
| qnap | quts_hero | h5.2.0.2802 | any |
| qnap | quts_hero | h5.2.0.2823 | any |
| qnap | quts_hero | h5.2.0.2851 | any |
| qnap | quts_hero | h5.2.0.2860 | any |
| qnap | quts_hero | h5.2.1.2929 | any |
| qnap | quts_hero | h5.2.1.2940 | any |
| qnap | quts_hero | h5.2.2.2952 | any |
| qnap | quts_hero | h5.2.3.3006 | any |
| qnap | quts_hero | h5.2.4.3070 | any |
| qnap | quts_hero | h5.2.4.3079 | any |
| qnap | quts_hero | h5.2.5.3138 | any |
| qnap | quts_hero | h5.2.6.3195 | any |
| qnap | quts_hero | h5.2.7.3256 | any |
| qnap | quts_hero | h5.2.7.3297 | any |
| qnap | quts_hero | h5.2.8.3321 | any |
References 1
- qnap.com https://www.qnap.com/en/security-advisory/qsa-26-05
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.