CVE-2004-1099

Secure Access Control Server vulnerability

CVSS

10.0

EPSS

10.2%

EPSS pct

95th

Exploited

No known

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.

Affected vendor

Cisco

Affected product

Secure Access Control Server

CVSS vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Published

2005-01-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 10.2% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2004-1099

Confirm whether Cisco Secure Access Control Server is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2004-1099.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2004-1099

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