Critical Vulnerability in F5 BIG-IP APM Exploited in the Wild

# Critical Vulnerability in F5 BIG-IP APM Exploited in the Wild

https://gcdradar.vercel.app/incidents/critical-vulnerability-in-f5-big-ip-apm-exploited-in-the-wil · AIR-2026-1583 · closed 2026-11-10

- Lane: Patch now
- Severity: 3 (Confirmed exploitation): Critical vulnerability confirmed exploited in the wild.
- Fix status: Patched
- First reported: 2026-10-27 (happened 2026-09-22)
- AI role: No AI role
- Products: F5 BIG-IP APM

## Summary

F5 addressed a critical vulnerability in its BIG-IP APM product that has been confirmed as actively exploited in the wild. CERT-EU recommends applying security updates immediately.

## What to do

Apply the updates provided by F5 for BIG-IP APM as soon as possible.

## Affected and fixed versions

- Affected: F5 BIG-IP APM

## Latest updates

- 2026-10-27: 2026-013: Critical Vulnerability in F5 BIG-IP APM (https://cert.europa.eu/publications/security-advisories/2026-013)

## Sources

- 2026-10-27 CERT-EU: 2026-013: Critical Vulnerability in F5 BIG-IP APM https://cert.europa.eu/publications/security-advisories/2026-013

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.