CVE-2025-6752 Linksys WRT1900ACS/EA7200/EA7450/EA7500 IGD Layer3Forwarding SetDefaultConnectionService stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in Linksys routers via the IGD interface, potentially leading to 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-2025-6752?
CVE-2025-6752 is a high-severity memory corruption vulnerability in Linksys EA7200, published on 27 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in Linksys WRT1900ACS, EA7200, EA7450 and EA7500 up to 20250619 and classified as critical. This vulnerability affects the function SetDefaultConnectionService of the file /upnp/control/Layer3Forwarding of the component IGD. The manipulation of the argument NewDefaultConnectionService leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the 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-2025-6752?
How do I fix CVE-2025-6752?
No fix has been published for CVE-2025-6752 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-2025-6752 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-6752 exists.
Sources
Also known as GHSA-7f6v-fmjx-rjvr.