Cyber Resilience

CVE-2025-66276

CriticalUpdated

Published: 10 June 2026

Published
10 June 2026
Modified
17 June 2026
KEV Added
—
Patch
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CVSS Score v4 9.2 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
EPSS Score 0.0029 20.8th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2025-66276 is a critical-severity an unspecified weakness vulnerability in Qnap Qts. Its CVSS base score is 9.2 (Critical).

Operationally, ranked at the 20.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

QuTS hero is not affected. We have already fixed the vulnerability in the following version: QTS 5.2.7.3256 build 20250913 and later

CWE(s)
NVD-CWE-noinfo

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

qnap
qts
4.3.0 — 5.2.7.3256

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References