F5 BIG-IP's CVE-2025-53521: DoS Flaw Morphs into RCE Weapon, Already Hitting the Wild Shodan counts 140,000+ F5 BIG-IP devices staring out at the internet, ripe for CVE-2025-53521's new RCE tricks. What started as a DoS headache just went nuclear. 4 min read 1 month ago