Auth bypass in Qnap Qts
CVE-2024-21899
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 t…
Vulnerability class: Broken Authentication
EPSS: 0.244 (97.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Qnap Qts — versions 4.5.4.2627, 5.1.3.2578
- Qnap Qutscloud
- Qnap Quts_hero — versions h4.5.4.2626, h5.1.3.2578
- Qnap Systems Inc. Qts — versions 5.1.x, 4.5.x
- Qnap Systems Inc. Qutscloud — versions c5.x.x
- Qnap Systems Inc. Quts Hero — versions h5.1.x, h4.5.x
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@qnapsecurity.com.tw (Vendor Advisory)
Frequently asked questions
- What is CVE-2024-21899?
- CVE-2024-21899 is a critical-severity vulnerability in Qnap Qts, classified under Improper Authentication. CVSS score: 9.8/10. Published 2024-03-08.
- How severe is CVE-2024-21899?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2024-21899 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.