CVE-2025-69248 free5GC has Array Index Out of Bounds in AMF Leading to Denial of Service
Remote attackers can crash the free5GC AMF service via malformed NAS requests, causing denial of service for 5G core networks.
- 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-2025-69248?
CVE-2025-69248 is a medium-severity memory corruption vulnerability in free5gc amf, published on 23 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
free5GC is an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 of free5GC's AMF service have a Buffer Overflow vulnerability leading to Denial of Service. Remote unauthenticated attackers can crash the AMF service by sending a specially crafted NAS Registration Request with a malformed 5GS Mobile Identity, causing complete denial of service for the 5G core network. All deployments of free5GC using the AMF component may be affected. Pull request 43 of the free5gc/nas repo contains a fix. No direct workaround is available at the application level. Applying the official patch is recommended.
Weakness: CWE-129
Which versions are affected by CVE-2025-69248?
It affects 1 product.
Products include Free5gc Amf.
How do I fix CVE-2025-69248?
No fix has been published for CVE-2025-69248 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-2025-69248 being exploited?
There is no known exploitation of CVE-2025-69248 in the wild and no public exploit code.
Other vulnerabilities in free5gc amf
Sources
Also known as GHSA-h6xc-8vvf-jcjp.