Cyber Resilience

CVE-2024-21905

Medium

Published: 26 April 2024

Published
26 April 2024
Modified
05 December 2025
KEV Added
Patch
CVSS Score v3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
EPSS Score 0.0018 39.9th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-21905 is a medium-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Qnap Qts. Its CVSS base score is 6.5 (Medium).

Operationally, ranked at the 39.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

An integer overflow or wraparound 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…

more

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

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

qnap
qts
5.1.3.2578 · 5.0.0 — 5.1.3.2578
qnap
quts hero
h5.1.3.2578 · h5.0.0 — h5.1.3.2578
qnap
qutscloud
c5.0.0.1919 — c5.1.5.2651

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References