CVE-2026-115925
Published:October 28, 2026
Updated:October 29, 2026
Executive Summary This audit identifies a critical security vulnerability where the free5gc project includes an unencrypted Root Certificate Authority (CA) private key committed directly to the source code repository. This exposes the entire PKI infrastructure and enables complete compromise of TLS/mTLS communications across all 5G core services. Recommendation: Immediate removal from repository + regeneration of new root CA key pair PKI Chain Structure: "cert/root.key ← ROOT CA PRIVATE KEY (COMPROMISED) cert/root.pem ← Root CA public certificate (safe) ├─ signs → cert/amf.pem/key ← AMF service certs ├─ signs → cert/ausf.pem/key ← AUSF service certs ├─ signs → cert/bsf.pem/key ← BSF service certs ├─ signs → cert/chf.pem/key ← CHF service certs ├─ signs → cert/n3iwf.pem/key ← N3IWF service certs ├─ signs → cert/nef.pem/key ← NEF service certs ├─ signs → cert/nrf.pem/key ← NRF service certs ├─ signs → cert/nssf.pem/key ← NSSF service certs ├─ signs → cert/pcf.pem/key ← PCF service certs ├─ signs → cert/smf.pem/key ← SMF service certs ├─ signs → cert/tngf.pem/key ← TNGF service certs └─ signs → cert/udm.pem/key ← UDM service certs └─ signs → cert/udr.pem/key ← UDR service certs" https://github.com/aymencdm/CVE-2026-115925-free5gc-root-ca-key-exposure
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Contact UsCVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Use of Hard-coded Cryptographic Key