Monitor vulnerabilities like this one.
Sign up free to get alerted when software you use is affected.
7.5
Free5GC v4.0.1 Crashes When Processing Specific Mobile Identity Request
CVE-2025-70121
Summary
A security weakness in the free5GC system can cause it to crash when receiving a specific type of request. This can prevent the system from functioning, making it unavailable to users. To protect against this, update to a patched version of free5GC.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| free5gc | free5gc | 4.0.1 | – |
Original title
An array index out of bounds vulnerability in the AMF component of free5GC v4.0.1 allows remote attackers to cause a denial of service via a crafted 5GS Mobile Identity in a NAS Registration Reques...
Original description
An array index out of bounds vulnerability in the AMF component of free5GC v4.0.1 allows remote attackers to cause a denial of service via a crafted 5GS Mobile Identity in a NAS Registration Request message. The issue occurs in the GetSUCI method (NAS_MobileIdentity5GS.go) when accessing index 5 of a 5-element array, leading to a runtime panic and AMF crash.
nvd CVSS3.1
7.5
Vulnerability type
CWE-125
Out-of-bounds Read
- https://github.com/free5gc/free5gc/issues/747 Exploit Issue Tracking Vendor Advisory
Published: 13 Feb 2026 · Updated: 11 Mar 2026 · First seen: 6 Mar 2026