CVE-2024-48866
MEDIUMDescription
An improper handling of URL encoding (Hex Encoding) vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers to run the system into unexpected state. We have already fixed the vulnerability in the following versions: QTS 5.1.9.2954 build 20241120 and later QTS 5.2.2.2950 build 20241114 and later QuTS hero h5.1.9.2954 build 20241120 and later QuTS hero h5.2.2.2952 build 20241116 and later
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 36% of all known CVEs.
References
Related Vulnerabilities
Other CWE-177 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2022-27780 | High | 7.5 | 2.3% | - | Fix |
| CVE-2018-3718 | Medium | 5.3 | 1.3% | - | Fix |
| CVE-2022-3854 | Medium | 6.5 | 0.6% | - | Fix |
| CVE-2026-41041 | Critical | 9.1 | 0.5% | - | Fix |
| CVE-2026-22031 | High | 8.4 | 0.5% | - | Fix |
| CVE-2026-29045 | High | 7.5 | 0.4% | - | Fix |
Common questions
How do I fix CVE-2024-48866?
No published fix for CVE-2024-48866 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2024-48866 being actively exploited?
Not that we know of. CVE-2024-48866 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.43% is the estimated probability that it will be exploited in the next 30 days. That is higher than 36% of all scored CVEs.
How severe is CVE-2024-48866?
CVE-2024-48866 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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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.