CVE-2025-66276

9.2 criticalEPSS 0.3%

Critical (9.2) in qnap qts. EPSS 0.3% chance of exploitation in the next 30 days.

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

Severity

9.2 critical

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

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
Published: 2026-06-10
Modified: 2026-07-23
Record from: the NVD, synced 2026-10-19