CVE-2023-39301: QTS, QuTS hero, QuTScloud

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-11-03 · updated 2026-06-17
Weakness: CWE-918

Description

A server-side request forgery (SSRF) vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated users to read application data via a network. We have already fixed the vulnerability in the following versions: QTS 5.0.1.2514 build 20230906 and later QTS 5.1.1.2491 build 20230815 and later QuTS hero h5.0.1.2515 build 20230907 and later QuTS hero h5.1.1.2488 build 20230812 and later QuTScloud c5.1.0.2498 and later

Affected products

QNAP QTS: before 5.1.1.2491; before 5.0.1.2514 — fixed in 5.0.1.2514, 5.1.1.2491
QNAP Systems Inc. QuTS hero: before h5.1.1.2488; before h5.0.1.2515 — fixed in h5.0.1.2515, h5.1.1.2488
QNAP Systems Inc. QuTScloud: before c5.1.0.2498 — fixed in c5.1.0.2498

How to fix

Upgrade to a fixed version: QNAP QTS 5.0.1.2514, 5.1.1.2491; QNAP Systems Inc. QuTS hero h5.0.1.2515, h5.1.1.2488; QNAP Systems Inc. QuTScloud c5.1.0.2498. Check the vendor advisory for mitigations.

References

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