The Cisco Content Services Switch (CSS) 11500 with software 08.20.1.01 conveys authentication data through ClientCert-* headers but does not delete client-supplied ClientCert-* headers, which might allow remote attackers to bypass authentication via crafted header data, as demonstrated by a ClientCert-Subject-CN header, aka Bug ID CSCsz04690.
建议您更新当前系统或软件至最新版，完成漏洞的修复。