CVE-2011-5124: Bluecoat Proxyone

High severity, CVSS 10.0. EPSS: 54.6% chance of exploitation in the next 30 days.

Stack-based buffer overflow in the BCAAA component before build 60258, as used by Blue Coat ProxySG 4.2.3 through 6.1 and ProxyOne, allows remote attackers to execute arbitrary code via a large packet to the synchronization port (16102/tcp).

Affected products

• Bluecoat Proxyone: any version
• Bluecoat Proxysg: version 4.2.6 only; version 4.3.2.3 only; version 5.1 only; version 5.1.6.1 only; version 5.2 only; version 5.2.2.4 only; …

Published 2012-08-26. Last modified 2026-06-16.