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F5 patches actively exploited BIG-IP APM zero-day RCE flaw

2026-09-23 15:27 UTC · BleepingComputer · read the source ↗ #f5-big-ip#zero-day#rce
  • Engineer — Act: BIG-IP APM is a common enterprise edge/access device; active RCE exploitation with a patch now available means immediate upgrade is warranted — apply F5’s security updates to BIG-IP APM without waiting for your normal patch window.
  • SOC/IR — Act: Active exploitation of an edge access device requires an assume-breach posture — sweep BIG-IP APM logs for anomalous sessions, unauthorized admin activity, or unusual outbound connections dating back before the patch was issued.
  • Leader — Act: Confirm within the week whether BIG-IP APM is in your estate; if so, direct engineering to treat this as emergency patching and brief incident response, as actively exploited perimeter RCE zero-days carry real breach risk before patching completes.
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