NULL pointer dereference in QuTS hero - CVE-2025-66274
Published: February 12, 2026
Vulnerability identifier: #VU122742
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-66274
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote administrator can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Affected software
QuTS hero
How to mitigate CVE-2025-66274
Install updates from vendor's website.
QuTS hero - update to h5.3.2.3354 build 20251225