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F5 BIG-IP APM Flaw Upgraded to Active RCE Risk, Urgency to Patch

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Source: BleepingComputer
F5 BIG-IP APM Flaw Upgraded to Active RCE Risk, Urgency to Patch
Photo: BleepingComputer
TL;DR

F5 Networks reclassified the BIG-IP APM vulnerability CVE-2025-53521 from a DoS issue to a critical remote code execution flaw, with attackers exploiting unpatched systems to deploy webshells. CISA has ordered federal agencies to patch, and F5 issued mitigations and indicators of compromise as online exposure of BIG-IP instances remains high. Patch now and review disks, logs, and terminal history for signs of intrusion.

Topics:businesstechnology#big-ip#cve-2025-53521#f5#iocs#rce#technology
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  1. Hackers now exploit critical F5 BIG-IP flaw in attacks, patch now  BleepingComputer
  2. CISA Adds CVE-2025-53521 to KEV After Active F5 BIG-IP APM Exploitation  The Hacker News
  3. Attackers are exploiting RCE vulnerability in BIG-IP APM systems (CVE-2025-53521)  Help Net Security
  4. Critical BIG-IP bug exploited: Pre-auth RCE and bad news  thestack.technology
  5. Vulnerability affecting F5 BIG-IP APM  National Cyber Security Centre

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