EUVD-2026-14264Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from NVD.
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
5DescriptionCVE.org
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.
AnalysisAI
Free5GC 4.1.0's AMF component is susceptible to a denial of service attack in the HandleRegistrationComplete function that can be exploited remotely without authentication. An attacker can manipulate the registration process to crash or disable the affected service. A patch is available and should be applied to restore normal operation.
Technical ContextAI
Free5GC is an open-source implementation of the 3GPP 5G core network specification. The vulnerable code resides in the AMF (Access and Mobility Function) component, which handles Non-Access Stratum (NAS) protocol messages including registration procedures defined in 3GPP TS 24.501. The HandleRegistrationComplete function processes NAS messages during the final stage of device registration. The vulnerability is classified under CWE-404 (Improper Resource Validation), indicating insufficient validation or bounds checking of input parameters passed to this handler. The attack vector is network-based (CVSS:3.1/AV:N), meaning the vulnerable service is directly accessible over the network, consistent with 5G core network exposure.
RemediationAI
Apply the vendor-provided patch immediately by updating to the fixed version of the AMF component corresponding to commit 52e9386401ce56ea773c5aa587d4cdf7d53da799 or later from the Free5GC GitHub repository at https://github.com/free5gc/amf. This can be accomplished by pulling the latest main branch or a stable release tag that includes this commit fix. For organizations unable to patch immediately, implement network-level access controls restricting NAS protocol traffic to the AMF to trusted UE (User Equipment) sources and trusted network gateways. Additionally, configure monitoring and alerting on the AMF for abnormal NAS message patterns or registration procedure failures that may indicate exploitation attempts. Verify the patch installation by confirming the updated HandleRegistrationComplete function includes proper input validation before processing registration complete messages.
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Same weakness CWE-404 – Improper Resource Shutdown or Release
View allSame technique Denial Of Service
View allVendor StatusVendor
SUSE
Severity: Moderate| Product | Status |
|---|---|
| SUSE Linux Enterprise Server 16.1 | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.1 | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | Affected |
| openSUSE Leap 15.5 | Affected |
| openSUSE Leap 15.6 | Affected |
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External POC / Exploit Code
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