Is CVE-2024-38638 in the CISA KEV catalog?

No. CVE-2024-38638 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-38638?

CVE-2024-38638 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2024-38638?

CVE-2024-38638 has an EPSS score of 0.46% (37th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2024-38638

HIGH

7.2

CVSS v3

NVD

Description

An out-of-bounds write vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers who have gained administrator access to modify or corrupt memory. QTS 5.2.x/QuTS hero h5.2.x are not affected. We have already fixed the vulnerability in the following versions: QTS 5.1.9.2954 build 20241120 and later QuTS hero h5.1.9.2954 build 20241120 and later

CWE-787Out-of-bounds Write

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.46%probability of exploitation in 30 days

37thpercentile

Low risk: more likely to be exploited than 37% of all known CVEs.

References

https://www.qnap.com/en/security-advisory/qsa-24-52

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-09-23.