CVE-2025-11653 UTT HiPER 2620G fNTP strcpy buffer overflow
Remote attackers can trigger a buffer overflow in the NTP configuration interface of UTT HiPER 2620G routers, potentially leading to code execution or service disruption.
- 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-2025-11653?
CVE-2025-11653 is a high-severity memory corruption vulnerability in UTT HiPER 2620G, published on 13 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was determined in UTT HiPER 2620G up to 3.1.4. Impacted is the function strcpy of the file /goform/fNTP. This manipulation of the argument NTPServerIP causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2025-11653?
It affects 1 product.
Products include Utt 2620g Firmware.
How do I fix CVE-2025-11653?
No fix has been published for CVE-2025-11653 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-2025-11653 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-11653 exists.
Sources
Also known as GHSA-x7f8-7938-4jm9.