CVE-2025-67186 Memory corruption in n/a
Remote attackers can trigger a buffer overflow in the firewall module of TOTOLINK A950RG routers, potentially leading to arbitrary code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-67186?
CVE-2025-67186 is a critical memory corruption vulnerability in n/a, published on 3 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
TOTOLINK A950RG V4.1.2cu.5204_B20210112 contains a buffer overflow vulnerability in the setUrlFilterRules interface of /lib/cste_modules/firewall.so. The vulnerability occurs because the `url` parameter is not properly validated for length, allowing remote attackers to trigger a buffer overflow, potentially leading to arbitrary code execution or denial of service.
Weakness: CWE-120
Which versions are affected by CVE-2025-67186?
It affects 1 product.
Products include Totolink A950rg Firmware.
How do I fix CVE-2025-67186?
No fix has been published for CVE-2025-67186 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-2025-67186 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-67186 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-xf8g-xrmp-prrv.