CVE-2025-66276 PUBLISHED

QTS

Assigner: qnap
Reserved: 26.11.2025 Published: 10.06.2026 Updated: 10.06.2026

QuTS hero is not affected.

We have already fixed the vulnerability in the following version: QTS 5.2.7.3256 build 20250913 and later

CVSS Vector: 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
CVSS Score: 9.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Vendor	QNAP Systems Inc.
Product	QTS
Versions	Default: unaffected affected from 5.2.0 to 5.2.7.3256 build 20250913 (excl.)

Vendor	QNAP Systems Inc.
Product	QuTS hero
Versions	Default: unaffected Version ? is unaffected

We have already fixed the vulnerability in the following version: QTS 5.2.7.3256 build 20250913 and later