by Kastro
Paper/Archive/CVE-2025-52856

CVE-2025-52856

QNAP Systems Inc. VioStor — VioStor

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 51.3.513 × 2010.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

Affected

ProductAffectedFixed inSource
VioStor5.1.0 – < 5.1.6 build 202506215.1.6 build 20250621CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
qnap (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refqnap.com/en/security-advisory/qsa-25-29