F5 BIG-IP APM Zero-Day Actively Exploited

THREAT INTELLIGENCE

Peer Review

4.8

Proven Trust

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Critical

CVE-2026-94127

Other

September 22, 2026

Executive Summary

A critical zero-day enables unauthenticated remote code execution when the APM access policy uses an OAuth profile.

Key Details

Affected Platform

Attack Surface

Network accessible, unauthenticated

Recommended Action

Apply vendor patch

Affected Environment

F5 BIG-IP Access Policy Manager module across versions 21.1.0, 17.5.0 to 17.5.1, and 17.1.0 to 17.1.3.

Operational Impact

Full control of the affected system, enabling installation of programs, data manipulation, or new accounts.

Technical Root Cause

Malicious traffic against the APM access policy and OAuth profile triggers unauthenticated remote code execution.

Recommended Mitigation

Apply F5's iRule mitigation or update to a fixed BIG-IP release immediately after testing.

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Full Technical Report

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References

F5 Security Advisory K000162605, BleepingComputer.