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CVE-2025-62852

QTS, QuTS hero

MEDIUM

6.5

CVSS Score

Published: January 2, 2026 at 03:19 PM UTC

Updated: October 7, 2026 at 11:10 AM UTC

2 products affected across 1 vendorQTSQuTS hero

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

A buffer overflow 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 modify memory or crash processes. We have already fixed the vulnerability in the following version: QTS 5.2.8.3332 build 20251128 and later

Affected

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

95%

5.2.x ≤ v < 5.2.8.3332 build 202511285.2.0.2737 build_20240417 5.2.0.2744 build_20240424 5.2.0.2782 build_20240601 5.2.0.2802 build_20240620 5.2.0.2823 build_20240711 5.2.0.2851 build_20240808 5.2.0.2860 build_20240817 5.2.1.2930 build_20241025 5.2.2.2950 build_20241114 5.2.3.3006 build_20250108 5.2.4.3070 build_20250312 5.2.4.3079 build_20250321 5.2.4.3092 build_20250403 5.2.5.3145 build_20250526 5.2.6.3195 build_20250715 5.2.6.3229 build_20250818 5.2.7.3256 build_20250913 5.2.7.3297 build_20251024 5.2.x

Affected range stops below 5.2.8.3332 build 20251128, 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-25-51

References (1)

Vendor Advisory

Source: cverecord

https://www.qnap.com/en/security-advisory/qsa-25-51

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

6.5MEDIUM[email protected]

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

Vector?

Quick Info

StatusANALYZED

CWE

CWE-121CWE-787

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