CVE-2025-52856: critical vulnerability in QNAP Systems Inc. VioStor
VioStor
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.7%
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
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
Affected products
QNAP Systems Inc. · VioStorRelated CVEs — QNAP Systems Inc. VioStor
In the same product, most dangerous first.