How broadly exploitable is this vulnerability?

Exploitability is limited to entities that can send PFCP traffic to the UPF. In many production deployments, this interface is restricted to trusted core network components, but in lab, test, or misconfigured environments, it may be reachable by untrusted systems or malicious insiders.

Does exploiting this issue require authentication or credentials?

Typically, PFCP itself does not use application-layer authentication, so exploitation hinges on network-level access and the ability to appear as or reach a PFCP peer. If the PFCP control-plane is not strictly isolated, an attacker with such reach can attempt to exploit the vulnerability without additional credentials.

What is the safest general fix pattern?

The safest pattern is to implement strict, specification-driven validation for all PFCP messages, especially Association Setup, before mutating any internal UPF state. Combined with robust error handling and state rollback, this ensures that malformed messages are cleanly rejected without side effects.

Severity:

HIGH RISK

(7.5)

Improper Input Validation (CWE-20) in free5GC UPF PFCP Association Handling

CVE-2025-70123

Published:

Feb 13, 2026

Status:

Undergoing Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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CWE-306

CRITICAL RISK

CRITICAL

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Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Improper Input Validation

CWE:

CWE-20

Impact:

Denial of Service and Control Plane Instability

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Input Validation

CWE:

CWE-20

Impact:

Denial of Service and Control Plane Instability

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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Improper Input Validation (CWE-20) in free5GC UPF PFCP Association Handling

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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