CVE-2025-30273 QTS, QuTS hero
Remote authenticated attackers can exploit an out-of-bounds write in QNAP QTS and QuTS hero to corrupt memory, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-30273?
CVE-2025-30273 is a high-severity memory corruption vulnerability in Qnap Qts, published on 29 Aug 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An out-of-bounds write vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains a user account, they can then exploit the vulnerability to modify or corrupt memory.
We have already fixed the vulnerability in the following versions: QTS 5.2.5.3145 build 20250526 and later QuTS hero h5.2.5.3138 build 20250519 and later
Weakness: CWE-787
Which versions are affected by CVE-2025-30273?
It affects 2 products.
Products include Qnap Qts, Qnap Quts Hero.
How do I fix CVE-2025-30273?
No fix has been published for CVE-2025-30273 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-30273 being exploited?
There is no known exploitation of CVE-2025-30273 in the wild and no public exploit code.
Other vulnerabilities in Qnap Qts
Sources
Also known as GHSA-2fcj-xjq4-c3h8.