How severe is CVE-2006-4097?

CVE-2006-4097 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2006-4097 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-4097?

CVE-2006-4097 primarily affects Cisco Secure Access Control Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-4097?

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-2006-4097 published?

CVE-2006-4097 was published on 2006-12-31 and last updated on 2026-06-16.

CVE-2006-4097

CVE-2006-4097 is a high-severity vulnerability in Cisco Secure Access Control Server with a CVSS 2.0 base score of 7.8. 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 7.8)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Secure Access Control Server
Published: 2006-12-31
Last modified: 2026-06-16

Description

Multiple unspecified vulnerabilities in the CSRadius service in Cisco Secure Access Control Server (ACS) for Windows before 4.1 and ACS Solution Engine before 4.1 allow remote attackers to cause a denial of service (crash) via a crafted RADIUS Access-Request packet. NOTE: it has been reported that at least one issue is a heap-based buffer overflow involving the Tunnel-Password attribute.

Frequently asked questions

What is CVE-2006-4097?: Multiple unspecified vulnerabilities in the CSRadius service in Cisco Secure Access Control Server (ACS) for Windows before 4.1 and ACS Solution Engine before 4.1 allow remote attackers to cause a denial of service (crash) via a crafted RADIUS Access-Request packet. NOTE: it has been reported that at least one issue is a heap-based buffer overflow involving the Tunnel-Password attribute.
How severe is CVE-2006-4097?: CVE-2006-4097 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2006-4097 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-4097?: CVE-2006-4097 primarily affects Cisco Secure Access Control Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-4097?: 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-2006-4097 published?: CVE-2006-4097 was published on 2006-12-31 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:cisco:secure_access_control_server:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_access_control_server:4.1:*:windows:*:*:*:*:*

More vulnerabilities in Cisco Secure Access Control Server

CVE-2006-4098 — Critical (CVSS 10.0): Stack-based buffer overflow in the CSRadius service in Cisco Secure Access Control Server (ACS) for Windows before 4.1…
CVE-2004-1099 — Critical (CVSS 10.0): Cisco Secure Access Control Server for Windows (ACS Windows) and Cisco Secure Access Control Server Solution Engine…
CVE-2000-1054 — Critical (CVSS 10.0): Buffer overflow in CSAdmin module in CiscoSecure ACS Server 2.4(2) and earlier allows remote attackers to cause a…
CVE-2000-1055 — Critical (CVSS 10.0): Buffer overflow in CiscoSecure ACS Server 2.4(2) and earlier allows remote attackers to cause a denial of service and…
CVE-2013-3466 — Critical (CVSS 9.3): The EAP-FAST authentication module in Cisco Secure Access Control Server (ACS) 4.x before 4.2.1.15.11, when a RADIUS…
CVE-2008-2441 — High (CVSS 7.5): Cisco Secure ACS 3.x before 3.3(4) Build 12 patch 7, 4.0.x, 4.1.x before 4.1(4) Build 13 Patch 11, and 4.2.x before…

All CVEs affecting Cisco Secure Access Control Server →