CVE-2010-4679: Cisco 5500 Series Adaptive Security Appliance

High severity, CVSS 7.8. EPSS: 1.1% chance of exploitation in the next 30 days.

Cisco Adaptive Security Appliances (ASA) 5500 series devices with software before 8.2(3) do not properly handle Online Certificate Status Protocol (OCSP) connection failures, which allows remote OCSP responders to cause a denial of service (TCP socket exhaustion) by rejecting connection attempts, aka Bug ID CSCsz36816.

Affected products

• Cisco 5500 Series Adaptive Security Appliance
• Cisco Adaptive Security Appliance Software: up to and including 8.2\(2\); version 7.0 only; version 7.0(0) only; version 7.0(2) only; version 7.0(4) only; version 7.0(5) only; …
• Cisco ASA 5500

Published 2011-01-07. Last modified 2026-06-16.