CVE-2023-34971

QTS, QuTS hero

HIGH

8.8

CVSS Score

Published: August 24, 2023 at 04:14 PM UTC

Updated: June 17, 2026 at 06:04 AM UTC

2 products affected across 1 vendorQTSQuTS hero

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Severity

HIGH8.8

Exploit prediction

EPSS 0.1%

SSVC

No known exploit

Description

An inadequate encryption strength vulnerability has been reported to affect QNAP operating systems. If exploited, the vulnerability possibly allows local network clients to decrypt the data using brute force attacks via unspecified vectors. We have already fixed the vulnerability in the following versions: QTS 5.0.1.2425 build 20230609 and later QTS 5.1.0.2444 build 20230629 and later QTS 4.5.4.2467 build 20230718 and later QuTS hero h5.1.0.2424 build 20230609 and later QuTS hero h4.5.4.2476 build 20230728 and later

Affected

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

QTS · Qnap

95%

4.5.* ≤ v < 4.5.4.2467 build 202307184.5.4 ≤ v < 4.5.4.24675.0.* ≤ v < 5.0.1.2425 build 202306095.0.1 ≤ v < 5.0.1.24255.1.* ≤ v < 5.1.0.2444 build 202306295.1.0 ≤ v < 5.1.0.24444.5.*5.0.*5.1.*

Affected range stops below 4.5.4.2467, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.5.4.2467 build 20230718, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.1.2425, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.1.2425 build 20230609, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.1.0.2444, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.1.0.2444 build 20230629, so it looks safe — our inference, not a vendor statement

QuTS hero · Qnap

95%

h4.5.* ≤ v < h4.5.4.2476 build 20230728h4.5.4 ≤ v < h4.5.4.2476h5.1.* ≤ v < h5.1.0.2424 build 20230609h5.1.0 ≤ v < h5.1.0.2424h4.5.*h5.1.*

Affected range stops below h4.5.4.2476, so it looks safe — our inference, not a vendor statement

Affected range stops below h4.5.4.2476 build 20230728, so it looks safe — our inference, not a vendor statement

Affected range stops below h5.1.0.2424, so it looks safe — our inference, not a vendor statement

Affected range stops below h5.1.0.2424 build 20230609, 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-23-60

References (1)

Vendor Advisory

Source: [email protected]

https://www.qnap.com/en/security-advisory/qsa-23-60

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

8.8HIGH[email protected]

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

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-326

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