Vulnerability Details CVE-2025-66274
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 version:
QuTS hero h5.3.2.3354 build 20251225 and later
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 34.2%
CVSS Severity
CVSS v3 Score 4.9
Products affected by CVE-2025-66274
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cpe:2.3:o:qnap:quts_hero:h5.3.0.3115
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cpe:2.3:o:qnap:quts_hero:h5.3.0.3145
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cpe:2.3:o:qnap:quts_hero:h5.3.0.3192
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cpe:2.3:o:qnap:quts_hero:h5.3.1.3250
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cpe:2.3:o:qnap:quts_hero:h5.3.1.3292