TI-2004-00996 Aliases CVE-2004-1099 GHSA-jx47-vcqg-x34g

Cisco Secure Access Control Server for Windows (ACS Windows) and Cisco Secure Access…

MEDIUM 55Published 2004-12-01 · Updated 2024-08-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Complete · Complete · Complete
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.10195 95th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:cisco:secure_access_control_server:3.3\(1\):::::::*	3.3(1)	Vulnerable	Cisco
cpe:2.3:a:cisco:secure_access_control_server:3.3.1:::::::*	3.3.1	Vulnerable	Cisco
cpe:2.3:a:cisco:secure_acs_solution_engine::::::::	all versions	Vulnerable	Cisco

cpe:2.3:a:cisco:secure_access_control_server:3.3\(1\):*:*:*:*:*:*:* Versions 3.3(1) Vulnerable ·Cisco
cpe:2.3:a:cisco:secure_access_control_server:3.3.1:*:*:*:*:*:*:* Versions 3.3.1 Vulnerable ·Cisco
cpe:2.3:a:cisco:secure_acs_solution_engine:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2004-1099
2026-10-03 Alias added: GHSA-jx47-vcqg-x34g

References

Patch 1

P-028

Advisory 1

20041102 Vulnerability in Cisco Secure Access Control Server EAP-TLS Authentication

TI-2005-00319 Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with… CVSS 2.0MEDIUM 5.0
TI-2006-03972 Stack-based buffer overflow in the CSRadius service in Cisco Secure Access Control Server… CVSS 2.0HIGH 10.0
TI-2000-01044 Buffer overflow in CSAdmin module in CiscoSecure ACS Server 2.4(2) and earlier allows… CVSS 2.0HIGH 10.0
TI-2000-01045 Buffer overflow in CiscoSecure ACS Server 2.4(2) and earlier allows remote attackers to… CVSS 2.0HIGH 10.0
TI-2013-03026 The EAP-FAST authentication module in Cisco Secure Access Control Server (ACS) 4.x before… CVSS 2.0HIGH 9.3
TI-2007-00100 Stack-based buffer overflow in the CSAdmin service in Cisco Secure Access Control Server… CVSS 2.0HIGH 7.5

See all 33 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences