How severe is CVE-2008-1155?

CVE-2008-1155 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2008-1155 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-1155?

CVE-2008-1155 primarily affects Cisco Network Admission Control. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-1155?

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

When was CVE-2008-1155 published?

CVE-2008-1155 was published on 2008-04-16 and last updated on 2026-06-16.

CVE-2008-1155

CVE-2008-1155 is a critical-severity vulnerability in Cisco Network Admission Control with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Cisco Network Admission Control
Published: 2008-04-16
Last modified: 2026-06-16

Description

Cisco Network Admission Control (NAC) Appliance 3.5.x, 3.6.x before 3.6.4.4, 4.0.x before 4.0.6, and 4.1.x before 4.1.2 allows remote attackers to obtain the shared secret for the Clean Access Server (CAS) and Clean Access Manager (CAM) by sniffing error logs.

Frequently asked questions

What is CVE-2008-1155?: Cisco Network Admission Control (NAC) Appliance 3.5.x, 3.6.x before 3.6.4.4, 4.0.x before 4.0.6, and 4.1.x before 4.1.2 allows remote attackers to obtain the shared secret for the Clean Access Server (CAS) and Clean Access Manager (CAM) by sniffing error logs.
How severe is CVE-2008-1155?: CVE-2008-1155 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2008-1155 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-1155?: CVE-2008-1155 primarily affects Cisco Network Admission Control. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-1155?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-1155 published?: CVE-2008-1155 was published on 2008-04-16 and last updated on 2026-06-16.

References

Affected products (20)

cpe:2.3:a:cisco:network_admission_control:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:3.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:3.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:3.6.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:3.6.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:3.6.1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:3.6.2.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:3.6.2.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:3.6.4.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:3.6.4.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:4.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:4.0.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:4.0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:4.0.2.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:4.0.3.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:4.0.3.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:4.0.3.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:4.0.5.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:4.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:network_admission_control:4.1.0:*:*:*:*:*:*:*

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