{"id":"CVE-2004-1099","aliases":["EUVD-2004-1097","GHSA-jx47-vcqg-x34g"],"status":"published","title":"Cisco Secure Access Control Server for Windows (ACS Windows) and Cisco Secure Access Control...","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.","severity":{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.10195,"percentile":0.95696,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2004-12-01T05:00:00Z","modified":"2026-06-16T22:07:01Z","products":[{"vendor":"cisco","product":"secure_access_control_server"},{"vendor":"cisco","product":"secure_acs_solution_engine"}],"references":[{"url":"http://www.cisco.com/warp/public/707/cisco-sa-20041102-acs-eap-tls.shtml","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/17936","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.securityfocus.com/bid/11577","tags":["vdb-entry","x_refsource_BID","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.ciac.org/ciac/bulletins/p-028.shtml","tags":["third-party-advisory","government-resource","x_refsource_CIAC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-1099"},{"url":"https://github.com/advisories/GHSA-jx47-vcqg-x34g"}],"sources":{"cve":[{"id":"CVE-2004-1099","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.","status":"published","published":"2004-12-01T05:00:00Z","modified":"2024-08-08T00:39:00.862Z","updated_at":"2026-11-02T14:34:54.063504Z"}],"euvd":[{"id":"EUVD-2004-1097","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.","status":"published","published":"2004-12-01T05:00:00Z","modified":"2024-08-08T00:39:00Z","updated_at":"2026-11-03T01:15:16.711153Z"}],"ghsa":[{"id":"GHSA-jx47-vcqg-x34g","title":"Cisco Secure Access Control Server for Windows (ACS Windows) and Cisco Secure Access Control...","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.","status":"published","published":"2022-04-29T02:58:57Z","modified":"2023-01-30T05:03:20Z","updated_at":"2026-11-02T14:46:49.034004Z"}],"nvd":[{"id":"CVE-2004-1099","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.","status":"published","published":"2005-01-10T05:00:00Z","modified":"2026-06-16T22:07:01.303Z","cvss":[{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:53.133049Z"}]}}