CVE-2026-41136

free5GC AMF provides Access & Mobility Management Function (AMF) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. Prior to version 1.4.3, the `HTTPUEContextTransfer` handler in `internal/sbi/api_communication.go` does not include a `default` case in the `Content-Type` switch statement. When a request arrives with an unsupported `Content-Type`, the deserialization step is silently skipped, `err` remains `nil`, and the processor is invoked with a completely uninitialized `UeContextTransferRequest` object. Version 1.4.3 contains a fix.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/free5gc/amf/releases/tag/v1.4.3	Product Release Notes
https://github.com/free5gc/free5gc/security/advisories/GHSA-r99v-75p9-xqm5	Exploit Vendor Advisory
https://github.com/free5gc/free5gc/security/advisories/GHSA-r99v-75p9-xqm5	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:free5gc:amf::::::go::*
	cpe:2.3:a:free5gc:free5gc::::::::

History

No history.

Information

Published : 2026-04-22 00:16

Updated : 2026-06-17 10:46

NVD link : CVE-2026-41136

Mitre link : CVE-2026-41136

CVE.ORG link : CVE-2026-41136

JSON object : View

Products Affected

free5gc

amf
free5gc

CWE

CWE-440

Expected Behavior Violation

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