### [CVE-2004-1099](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1099) ![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue) ![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue) ![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen) ### Description Cisco Secure Access Control Server for Windows (ACS Windows) and Cisco Secure Access Control Server Solution Engine (ACS Solution Engine) 3.3.1, when the EAP-TLS protocol is enabled, does not properly handle expired or untrusted certificates, which allows remote attackers to bypass authentication and gain unauthorized access via a "cryptographically correct" certificate with valid fields such as the username. ### POC #### Reference - http://www.cisco.com/warp/public/707/cisco-sa-20041102-acs-eap-tls.shtml #### Github No PoCs found on GitHub currently.