Home/CVE/free5GC AMF provides Access & Mobility Management Function (AMF) for free5GC, an an open-source project for 5th generati
CVE

CVE-2026-41136

free5GC AMF provides Access & Mobility Management Function (AMF) for free5GC, an an open-source project for 5th generati

free5GC AMF provides Access & Mobility Management Function (AMF) for free5GC, 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.

MEDIUM · CVSS 5.3 EPSS 0.00016
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-440Expected Behavior Violation
▤

Affected Products & Versions

2
free5gc amf< 1.4.3
free5gc<= 4.2.1
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go github.com/free5gc/amf MODERATE
⚠

Public Exploits & PoCs

1
pocgithub.com · GHSA-r99v-75p9-xqm5github.com
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Apr 2026 · 12:16 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/free5gc/amf/releases/tag/v1.4.3ProductRelease Notes
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