CVE-2026-24717: QNAP QTS

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

A path traversal 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 read the contents of unexpected files or system data. We have already fixed the vulnerability in the following versions: QTS 5.2.9.3492 build 20260507 and later QuTS hero h5.2.9.3499 build 20260514 and later QuTS hero h5.3.4.3500 build 20260520 and later QuTS hero h6.0.0.3459 build 20260409 and later

Affected products

• QNAP QTS: from 5.2.0.2737, before 5.2.9.3492 (fixed in 5.2.9.3492)
• QNAP Quts Hero: from h5.0.0, before h5.2.9.3499 (fixed in h5.2.9.3499); from h5.3.0.3115, before h5.3.4.3500 (fixed in h5.3.4.3500); from h6.0.0.3324, before h6.0.0.3459 (fixed in h6.0.0.3459)

Published 2026-06-10. Last modified 2026-07-23.