CVE-2025-55847 Memory corruption in n/a
Attackers can execute arbitrary code or cause denial of service via a buffer overflow in the Wavlink router's settings export CGI script.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-55847?
CVE-2025-55847 is a high-severity memory corruption vulnerability in n/a, published on 26 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Wavlink M86X3A_V240730 contains a buffer overflow vulnerability in the /cgi-bin/ExportAllSettings.cgi file. The vulnerability arises because the Cookie parameter does not properly validate the length of input data. Attackers can exploit this to execute arbitrary code or cause a denial of service (DoS) on the system
Weakness: CWE-120
Which versions are affected by CVE-2025-55847?
It affects 1 product.
Products include Wavlink Wl-Wn586x3a Firmware.
How do I fix CVE-2025-55847?
No fix has been published for CVE-2025-55847 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-2025-55847 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55847 exists.
Sources
Also known as GHSA-fm5r-j2g9-7g6v.