CVE-2025-53407 QTS, QuTS hero
Remote attackers with admin access can exploit a format string vulnerability in QNAP operating systems to read secrets or modify memory.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-53407?
CVE-2025-53407 is a medium-severity vulnerability in Qnap Qts, published on 3 Oct 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A use of externally-controlled format string 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 obtain secret data or modify memory.
We have already fixed the vulnerability in the following versions: QTS 5.2.6.3195 build 20250715 and later QuTS hero h5.2.6.3195 build 20250715 and later
Weakness: CWE-134
Which versions are affected by CVE-2025-53407?
It affects 2 products.
Products include Qnap Qts, Qnap Quts Hero.
How do I fix CVE-2025-53407?
No fix has been published for CVE-2025-53407 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-53407 being exploited?
There is no known exploitation of CVE-2025-53407 in the wild and no public exploit code.
Other vulnerabilities in Qnap Qts
Sources
Also known as GHSA-gfmf-xvxq-9f39.