F5 BIG-IP APM CVE-2025-53521: What Was "Denial of Service" Is Now Confirmed RCE — and It's Being Exploited
If you run F5 BIG-IP APM and haven't patched since October 2025, stop reading and go do that. Then come back. CISA added CVE-2025-53521 to its Known Exploited Vulnerabilities catalog Friday afternoon. US federal civilian agencies have until Monday, March 30 to assess exposure and mitigate. That'