Auth bypass in QNAP Qts
CVE-2023-39303
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
Vulnerability class: Broken Authentication
EPSS: 0.005 (38.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Qnap Qts — versions 5.1.0.2348, 5.1.0.2399, 5.1.0.2418
- Qnap Qutscloud — versions c5.1.0.2498
- Qnap Quts_hero — versions h5.1.0.2409, h5.1.0.2424, h5.1.0.2453
- Qnap Systems Inc. Qts — versions 5.1.x
- Qnap Systems Inc. Qutscloud — versions c5.x.x
- Qnap Systems Inc. Quts Hero — versions h5.1.x
Weakness classification (CWE)
References
- security@qnapsecurity.com.tw (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-39303?
- CVE-2023-39303 is a medium-severity vulnerability in QNAP Qts, classified under Improper Authentication. CVSS score: 5.3/10. Published 2024-02-02.
- How severe is CVE-2023-39303?
- Medium severity. CVSS v3 base score is 5.3 out of 10.