CVE-2024-21899

high-risk
Published 2024-03-08

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 QTS 4.5.4.2627 build 20231225 and later QuTS hero h5.1.3.2578 build 20231110 and later QuTS hero h4.5.4.2626 build 20231225 and later QuTScloud c5.1.5.2651 and later

Do I need to act?

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11.4% chance of exploitation in next 30 days
EPSS score — higher than 89% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (7)

Qts
Qts
Qts

Affected Vendors

Qnap

References (2)

Vendor Advisory https://www.qnap.com/en/security-advisory/qsa-24-09
Vendor Advisory https://www.qnap.com/en/security-advisory/qsa-24-09
57
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 11/34 · Low
Exposure 14/34 · Moderate