CVE-2013-5959: Bluecoat Proxysg

High severity, CVSS 7.1. EPSS: 1.5% chance of exploitation in the next 30 days.

Blue Coat ProxySG before 6.2.14.1, 6.3.x, 6.4.x, and 6.5 before 6.5.2 allows remote attackers to cause a denial of service (memory consumption and dropped connections) via a recursive href in an HTML page, which triggers a large number of HTTP RW pipeline pre-fetch requests.

Affected products

• Bluecoat Proxysg: up to and including 5.3
• Bluecoat Proxysgos: version 5.4 only; version 5.3 only; version 5.5 only; version 6.1 only; version 6.2 only; version 6.3 only; …

Published 2013-09-28. Last modified 2026-06-16.