CVE-2025-62858

QTS, QuTS hero

State: Published
Severity: 5.1 Medium
Published: Jun 9, 2026
Updated: Jun 9, 2026
Reserved: Oct 24, 2025

Description

A buffer overflow 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 modify memory or crash processes.

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

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	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	qnap

Weaknesses

CWE-121

Affected Products

Product	Versions
QTSQNAP Systems Inc.	5.2.0 to before 5.2.9.3410 build 20260214Affected
QuTS heroQNAP Systems Inc.	h5.2.0 to before h5.2.9.3410 build 20260214Affected h5.3.0 to before h5.3.4.3500 build 20260520Affected ? to before h6.0.0.3397 build 20260206Affected

References

https://www.qnap.com/en/security-advisory/qsa-26-10

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