CVE-2025-53405: QTS, QuTS hero
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 5.2.7.3256 build 20250913 and later QuTS hero h5.2.7.3256 build 20250913 and later QuTS hero h5.3.1.3250 build 20250912 and later
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2025-53405?
CVE-2025-53405 is classified as a critical vulnerability that can lead to a denial-of-service attack.
How do I fix CVE-2025-53405?
To fix CVE-2025-53405, you need to update your QNAP QTS or QuTS hero operating system to the latest patched version.
Which versions are affected by CVE-2025-53405?
CVE-2025-53405 affects QNAP QTS versions up to 5.2.7.3256 and QuTS hero versions up to 5.2.7.3256 and 5.3.1.3250.
Can CVE-2025-53405 be exploited remotely?
Yes, CVE-2025-53405 can be exploited by a remote attacker with administrator access to perform a denial-of-service attack.
What are the consequences of exploiting CVE-2025-53405?
Exploiting CVE-2025-53405 can result in a denial-of-service condition, rendering the affected system unavailable.