CVE-2025-52856

CriticalCVSS 9.8/10Last modified Oct 18, 2026

Description

An improper authentication vulnerability has been reported to affect VioStor. If a remote attacker, they can then exploit the vulnerability to compromise the security of the system.

We have already fixed the vulnerability in the following version: VioStor 5.1.6 build 20250621 and later

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-287

Affected software

VendorProductVersions
QNAP Systems Inc.VioStor>= 5.1.0, < 5.1.6 build 20250621

References

Timeline

Published
Aug 29, 2025
Last modified
Oct 18, 2026
NVD status
Analyzed

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CVE-2025-52856: Critical severity, CVSS 9.8 | Vulnix