CVE-2026-108892 Linksys E1700 Mac Filter ssid1MACFilter stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the MAC filter feature of Linksys E1700 routers, potentially leading to 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-2026-108892?
CVE-2026-108892 is a critical memory corruption vulnerability in Linksys E1700, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was determined in Linksys E1700 1.0.0.4.003. This vulnerability affects the function ssid1MACFilter of the file /goform/ssid1MACFilter of the component Mac Filter. This manipulation of the argument newap_text_%d causes stack-based buffer overflow. The attack may be initiated 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-2026-108892?
How do I fix CVE-2026-108892?
No fix has been published for CVE-2026-108892 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-2026-108892 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108892 exists.
Sources
Also known as GHSA-cgfm-fxm5-56x9.