CVE-2009-4420: F5 BIG-IP Application Security Manager

High severity, CVSS 7.8. EPSS: 2.2% chance of exploitation in the next 30 days.

Buffer overflow in the bd daemon in F5 Networks BIG-IP Application Security Manager (ASM) 9.4.4 through 9.4.7 and 10.0.0 through 10.0.1, and Protocol Security Manager (PSM) 9.4.5 through 9.4.7 and 10.0.0 through 10.0.1, allows remote attackers to cause a denial of service (crash) via unknown vectors. NOTE: some of these details are obtained from third party information.

Affected products

• F5 BIG-IP Application Security Manager: version 9.4.4 only; version 9.4.5 only; version 9.4.6 only; version 9.4.7 only; version 10.0.0 only; version 10.0.1 only
• F5 BIG-IP Protocol Security Manager: version 9.4.5 only; version 9.4.6 only; version 9.4.7 only; version 10.0.1 only
• F5 BIG-IP Protocol Security Module: version 10.0.0 only

Published 2009-12-24. Last modified 2026-06-16.