CVE-2025-1893 Open5GS AMF gmm-sm.c gmm_state_authentication denial of service
A remote attacker can crash the Open5GS AMF component, causing a network-wide outage and loss of connectivity for all users.
- 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-2025-1893?
CVE-2025-1893 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 4 Mar 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in Open5GS up to 2.7.2. It has been declared as problematic. Affected by this vulnerability is the function gmm_state_authentication of the file src/amf/gmm-sm.c of the component AMF. The manipulation leads to denial of service. The attack can be launched remotely. This vulnerability allows a single UE to crash the AMF, resulting in the complete loss of mobility and session management services and causing a network-wide outage. All registered UEs will lose connectivity, and new registrations will be blocked until the AMF is restarted, leading to a high availability impact. The exploit has been disclosed to the public and may be used. The patch is named e31e9965f00d9c744a7f728497cb4f3e97744ee8. It is recommended to apply a patch to fix this issue.
Weakness: CWE-404
Which versions are affected by CVE-2025-1893?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2025-1893?
No fix has been published for CVE-2025-1893 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-2025-1893 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-1893 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-x82x-9q5v-46w5.