CVE-2025-52856

critical · 9.3

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

9.3

CVSS

0.6%

EPSS (exploit prob.)

49th

EPSS percentile

2025-08-29

Published

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-287

Affected products

Vendor	Product	Affected versions
qnap	qvr	>= 5.1.0, < 5.1.6
qnap	qvr	5.1.6

Check a specific version with /api/v1/cve/match.

References

https://www.qnap.com/en/security-advisory/qsa-25-29

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-52856