CVE-2026-7706 Open5GS AMF gmm-handler.c gmm_handle_service_request denial of service
Remote attackers can cause a denial of service in Open5GS AMF via the gmm_handle_service_request function, affecting 5G core network availability.
- 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-2026-7706?
CVE-2026-7706 is a medium-severity denial of service vulnerability in Open5GS, published on 3 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in Open5GS up to 2.7.7. This issue affects the function gmm_handle_service_request of the file /src/amf/gmm-handler.c of the component AMF. The manipulation leads to denial of service. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-404
Which versions are affected by CVE-2026-7706?
How do I fix CVE-2026-7706?
No fix has been published for CVE-2026-7706 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-7706 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7706 exists.
Sources
Also known as GHSA-7338-fr45-62xc.