CVE-2025-47205
moderate-risk
Published 2026-02-11
A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following versions: QTS 5.2.8.3332 build 20251128 and later QuTS hero h5.2.8.3321 build 20251117 and later
Do I need to act?
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0.04% chance of exploitation
EPSS score — low exploit probability
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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
4
CVSS 4.9/10
Medium
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (1)
Vendor Advisory
https://www.qnap.com/en/security-advisory/qsa-26-05
43
/ 100
moderate-risk
Severity
20/34 · Moderate
Exploitability
0/34 · Minimal
Exposure
23/34 · High