CVE•Published 2026-04-22•Modified 2026-04-23•0 articles on news•6 live references•NVD data

CVE-2026-41136Free5gc · Amf

Vulnerability data via NVD (ingested)

CVSS v3.1

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS percentile

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Weaknesses (CWE)

CWE-440Expected Behavior Violation

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.

Timeline

Published 2026-04-22

Modified 2026-04-23

External references

NVD MITRE Exploit-DB Sploitus trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-41136

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Free5gc Amf"

All exposed Free5gc Amf instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Amf"

HTTP body or banner mentions "Amf" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-41136