Secuno
ENNL
Book demo

CVE-2024-21899

QNAP Qts vulnerability

9.8 CRITICALEPSS 24.4%
  1. Published8 Mar 2024

Description

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

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

QNAP Qts≥ 5.1.0 < 5.1.3.2578 · < 4.5.4.2627 · 4.5.4.2627 · 5.1.3.2578
QNAP Qutscloud< c5.1.5.2651
QNAP Quts Hero≥ h5.1.0 < h5.1.3.2578 · < h4.5.4.2626 · h4.5.4.2626 · h5.1.3.2578

Remediation

Fixed in
QNAP Qts≥ 5.1.3.2578
QNAP Qutscloud≥ c5.1.5.2651
QNAP Quts Hero≥ h5.1.3.2578

Frequently asked

Is CVE-2024-21899 being actively exploited?

CVE-2024-21899 is not in the CISA KEV catalog. Its EPSS exploit probability is 24.4%.

How severe is CVE-2024-21899?

CVE-2024-21899 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 24.4% probability of exploitation.

Which products are affected by CVE-2024-21899?

Affected products include QNAP Qts, QNAP Qutscloud, QNAP Quts Hero.

How do I fix CVE-2024-21899?

Upgrade affected software to a fixed version, for example QNAP Qts 5.1.3.2578, QNAP Qutscloud c5.1.5.2651, QNAP Quts Hero h5.1.3.2578 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-21899 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.