CVE-2025-14140 UTT 进取 520W websHostFilter strcpy buffer overflow
Remote attackers can trigger a buffer overflow in the UTT 520W router's host filter function, potentially leading to arbitrary 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-2025-14140?
CVE-2025-14140 is a high-severity memory corruption vulnerability in UTT 进取 520W, published on 6 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was detected in UTT 进取 520W 1.7.7-180627. The affected element is the function strcpy of the file /goform/websHostFilter. Performing manipulation of the argument addHostFilter results in buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2025-14140?
It affects 1 product.
Products include Utt 520w Firmware.
How do I fix CVE-2025-14140?
No fix has been published for CVE-2025-14140 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-2025-14140 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-14140 exists.
Other vulnerabilities in UTT 进取 520W
- CVE-2026-31059 Command injection in n/a
- CVE-2026-2071 UTT 进取 520W formP2PLimitConfig strcpy buffer overflow
- CVE-2026-2066 UTT 进取 520W formIpGroupConfig strcpy buffer overflow
- CVE-2026-2067 UTT 进取 520W formTimeGroupConfig strcpy buffer overflow
- CVE-2026-2068 UTT 进取 520W formSyslogConf strcpy buffer overflow
Sources
Also known as GHSA-c95h-vj6h-jv2w.