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CVE-2025-58466

QTS, QuTS hero

MEDIUM
4.9
CVSS Score
Published: February 11, 2026 at 12:16 PM UTC
Updated: June 17, 2026 at 09:44 AM UTC
2 products affected across 1 vendorQTSQuTS hero

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Severity
MEDIUM4.9
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

A use of uninitialized variable 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 denial of service conditions, or modify control flow in unexpected ways. We have already fixed the vulnerability in the following versions: QTS 5.2.8.3332 build 20251128 and later QuTS hero h5.2.8.3321 build 20251117 and later

Affected

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

QTS· Qnap
95%
5.2.x ≤ v < 5.2.8.3332 build 202511285.2.0.2737 build_202404175.2.0.2744 build_202404245.2.0.2782 build_202406015.2.0.2802 build_202406205.2.0.2823 build_202407115.2.0.2851 build_202408085.2.0.2860 build_202408175.2.1.2930 build_202410255.2.2.2950 build_202411145.2.3.3006 build_202501085.2.4.3070 build_202503125.2.4.3079 build_202503215.2.4.3092 build_202504035.2.5.3145 build_202505265.2.6.3195 build_202507155.2.6.3229 build_202508185.2.7.3256 build_202509135.2.7.3297 build_202510245.2.8.3332 build_202511285.2.x
Affected range stops below 5.2.8.3332 build 20251128, so it looks safe — our inference, not a vendor statement
QuTS hero· Qnap
95%
h5.2.x ≤ v < h5.2.8.3321 build 20251117h5.2.0.2737 build_20240417h5.2.0.2782 build_20240601h5.2.0.2789 build_20240607h5.2.0.2802 build_20240620h5.2.0.2823 build_20240711h5.2.0.2851 build_20240808h5.2.0.2860 build_20240817h5.2.1.2929 build_20241025h5.2.1.2940 build_20241105h5.2.2.2952 build_20241116h5.2.3.3006 build_20250108h5.2.4.3070 build_20250312h5.2.4.3079 build_20250321h5.2.5.3138 build_20250519h5.2.6.3195 build_20250715h5.2.7.3256 build_20250913h5.2.7.3297 build_20251024h5.2.8.3321 build_20251117h5.2.x
Affected range stops below h5.2.8.3321 build 20251117, 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

References (1)

Vendor Advisory
Source: cverecord
https://www.qnap.com/en/security-advisory/qsa-26-05

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

4.9MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-457

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