CVE-2025-66280
MEDIUM EPSS 34.8%
Published Jun 10, 20262w ago · Modified Jun 17, 20261w ago
5.1 CVSS 4.0
Published Jun 10, 2026 2w ago
Last Modified Jun 17, 2026 1w ago
Description
An integer overflow or wraparound vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to compromise the security of the system. We have already fixed the vulnerability in the following versions: QTS 5.2.9.3410 build 20260214 and later QuTS hero h5.2.9.3410 build 20260214 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3397 build 20260206 and later
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/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 High
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
34.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 2
CWE-121
CWE-190 Integer Overflow or Wraparound Numeric Error
Affected Products 4
References 1
- qnap.com https://www.qnap.com/en/security-advisory/qsa-26-10
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.