An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network.

We have already fixed the vulnerability in the following versions:
QTS 5.1.3.2578 build 20231110 and later
QuTS hero h5.1.3.2578 build 20231110 and later
QuTScloud c5.1.5.2651 and later

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-39303
• https://www.qnap.com/en/security-advisory/qsa-23-33