CVE-2005-4499

CVE-2005-4499 is a high-severity vulnerability in Cisco Pix Asa Ids with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 2% (78th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Cisco Pix Asa Ids
• Published: 2005-12-22
• Last modified: 2026-06-16

Description

The Downloadable RADIUS ACLs feature in Cisco PIX and VPN 3000 concentrators, when creating an ACL on the Cisco Secure Access Control Server (CS ACS), generates a random internal name for an ACL that is also used as a hidden user name and password, which allows remote attackers to gain privileges by sniffing the username from the cleartext portion of a RADIUS session, then using the password to log in to another device that uses CS ACS.

Frequently asked questions

What is CVE-2005-4499?

The Downloadable RADIUS ACLs feature in Cisco PIX and VPN 3000 concentrators, when creating an ACL on the Cisco Secure Access Control Server (CS ACS), generates a random internal name for an ACL that is also used as a hidden user name and password, which allows remote attackers to gain privileges by sniffing the username from the cleartext portion of a RADIUS session, then using the password to log in to another device that uses CS ACS.

How severe is CVE-2005-4499?

CVE-2005-4499 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2005-4499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-4499?

CVE-2005-4499 primarily affects Cisco Pix Asa Ids. In total, 156 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-4499?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2005-4499 published?

CVE-2005-4499 was published on 2005-12-22 and last updated on 2026-06-16.

References

• http://secunia.com/advisories/18141
• http://www.cisco.com/en/US/products/sw/secursw/ps2086/products_field_notice09186a00805bf1c4.shtml
• http://www.osvdb.org/22193
• http://www.securityfocus.com/archive/1/420020/100/0/threaded
• http://www.securityfocus.com/archive/1/420103/100/0/threaded
• http://www.securityfocus.com/bid/16025

Affected products (156)

• cpe:2.3:h:cisco:vpn_3001_concentrator:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:vpn_3015_concentrator:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:vpn_3020_concentrator:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:vpn_3030_concentator:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:vpn_3060_concentrator:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:vpn_3080_concentrator:*:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0\(4\):*:*:*:*:*:*:*
• cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0.1.4:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:adaptive_security_appliance_software:7.0.4.3:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.0:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.a:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.b:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.c:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.d:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.f:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.0:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.0.3.a:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.0.3.b:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.0.4:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.1\(rel\):*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.1.1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.1.2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.1.4:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5\(rel\):*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5.1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5.2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5.3:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5.4:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.5.5:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.3:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.5:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.7:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.7.a:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.7.b:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.7.c:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:3.6.7.d:*:*:*:*:*:*:*

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