# CVE-2026-41136

## Summary

- **CVE ID:** CVE-2026-41136
- **Severity:** MEDIUM
- **CVSS Score:** 5.5 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P)
- **CWE:** CWE-440
- **Published:** Apr 21, 2026
- **Last Modified:** Apr 22, 2026

## Description

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.

## Affected Products

- free5gc — amf (< 1.4.3)

## References

- [CNA](https://github.com/free5gc/free5gc/security/advisories/GHSA-r99v-75p9-xqm5)
- [CNA](https://github.com/free5gc/amf/releases/tag/v1.4.3)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.28%
- **EPSS Percentile:** 20.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._