CVE-2025-9405 Open5GS gmm-sm.c gmm_state_exception assertion
Remote attackers can trigger a reachable assertion in Open5GS AMF, causing a denial of service. Administrators should apply the available patch.
- 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-2025-9405?
CVE-2025-9405 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 25 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security flaw has been discovered in Open5GS up to 2.7.5. The impacted element is the function gmm_state_exception of the file src/amf/gmm-sm.c. The manipulation results in reachable assertion. It is possible to launch the attack remotely. The exploit has been released to the public and may be exploited. The patch is identified as 8e5fed16114f2f5e40bee1b161914b592b2b7b8f. Applying a patch is advised to resolve this issue.
Weakness: CWE-617
Which versions are affected by CVE-2025-9405?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2025-9405?
No fix has been published for CVE-2025-9405 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-2025-9405 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9405 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-3pc3-xxxx-7pfj.