CVE-2023-39301

QTS, QuTS hero, QuTScloud

MEDIUM

4.3

CVSS Score

Published: November 3, 2023 at 04:34 PM UTC

Updated: June 17, 2026 at 06:11 AM UTC

3 products affected across 1 vendorQTSQuTS heroQuTScloud

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Severity

MEDIUM4.3

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

QTS · Qnap

95%

v < 5.0.1.2514v < 5.1.1.24915.0.x ≤ v < 5.0.1.2514 build 202309065.1.x ≤ v < 5.1.1.2491 build 202308155.0.x 5.1.x

Affected range stops below 5.0.1.2514, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.1.2514 build 20230906, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.1.1.2491, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.1.1.2491 build 20230815, so it looks safe — our inference, not a vendor statement

QuTS hero · Qnap

95%

v < h5.0.1.2515v < h5.1.1.2488h5.0.x ≤ v < h5.0.1.2515 build 20230907h5.1.x ≤ v < h5.1.1.2488 build 20230812h5.0.x h5.1.x

Affected range stops below h5.0.1.2515, so it looks safe — our inference, not a vendor statement

Affected range stops below h5.0.1.2515 build 20230907, so it looks safe — our inference, not a vendor statement

Affected range stops below h5.1.1.2488, so it looks safe — our inference, not a vendor statement

Affected range stops below h5.1.1.2488 build 20230812, so it looks safe — our inference, not a vendor statement

QuTScloud · Qnap

95%

v < c5.1.0.2498c5.x.x ≤ v < c5.1.0.2498c5.x.x

Affected range stops below c5.1.0.2498, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.qnap.com/en/security-advisory/qsa-23-51

References (1)

Vendor Advisory

Source: [email protected]

https://www.qnap.com/en/security-advisory/qsa-23-51

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMqnap

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: LOW
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-918

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