CVE-2025-66276

critical · 9.2

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

9.2

CVSS

0.3%

EPSS (exploit prob.)

22nd

EPSS percentile

2026-06-10

Published

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

Affected products

Vendor	Product	Affected versions
qnap	qts	>= 4.3.0, < 5.2.7.3256

Check a specific version with /api/v1/cve/match.

References

https://www.qnap.com/en/security-advisory/qsa-25-56

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-66276