CVE-2026-2523 Open5GS SMF gn-handler.c smf_gn_handle_create_pdp_context_request assertion
Remote attackers can crash the Open5GS SMF component via a reachable assertion in the PDP context creation handler, causing 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-2026-2523?
CVE-2026-2523 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 16 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was detected in Open5GS up to 2.7.6. The affected element is the function smf_gn_handle_create_pdp_context_request of the file /src/smf/gn-handler.c of the component SMF. The manipulation results in reachable assertion. It is possible to launch the attack remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-617
Which versions are affected by CVE-2026-2523?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2026-2523?
No fix has been published for CVE-2026-2523 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-2026-2523 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2523 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-mvfh-9xv2-5xj7.