CVE-2026-4531: Free5GC AMF handler.go HandleRegistrationComplete denial of service
A weakness has been identified in Free5GC 4.1.0. Affected is the function HandleRegistrationComplete of the file internal/gmm/handler.go of the component AMF. Executing a manipulation can lead to denial of service. The attack may be performed from remote. This patch is called 52e9386401ce56ea773c5aa587d4cdf7d53da799. It is best practice to apply a patch to resolve this issue.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-4531?
CVE-2026-4531 has been identified as a denial of service vulnerability, indicating that it can disrupt service availability.
How do I fix CVE-2026-4531?
To fix CVE-2026-4531, it is recommended to update Free5GC to a version that addresses this vulnerability.
What components are affected by CVE-2026-4531?
CVE-2026-4531 affects the Free5GC 4.1.0 version, specifically the HandleRegistrationComplete function in the AMF component.
What impact does CVE-2026-4531 have on Free5GC users?
The impact of CVE-2026-4531 on Free5GC users is potential service interruption due to a denial of service condition.
Is there a known exploit for CVE-2026-4531?
Yes, CVE-2026-4531 has known exploitation vectors that can be used to manipulate the HandleRegistrationComplete function.