Medium (6.5) in qnap. EPSS 0.3% chance of exploitation in the next 30 days.
An incorrect authorization vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated users to bypass intended access restrictions via a network.
QTS 5.x, QuTS hero are not affected.
We have already fixed the vulnerability in the following versions:
QuTScloud c5.1.5.2651 and later
QTS 4.5.4.2627 build 20231225 and later
Severity
CVSS 3.1
6.5 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-10-31)