How severe is CVE-2002-1106?

CVE-2002-1106 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2002-1106 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2002-1106?

CVE-2002-1106 primarily affects Cisco Vpn Client. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2002-1106?

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-2002-1106 published?

CVE-2002-1106 was published on 2002-10-04 and last updated on 2026-06-16.

CVE-2002-1106

CVE-2002-1106 is a high-severity vulnerability in Cisco Vpn Client 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: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Vpn Client
Published: 2002-10-04
Last modified: 2026-06-16

Description

Cisco Virtual Private Network (VPN) Client software 2.x.x, and 3.x before 3.5.1C, does not properly verify that certificate DN fields match those of the certificate from the VPN Concentrator, which allows remote attackers to conduct man-in-the-middle attacks.

Frequently asked questions

What is CVE-2002-1106?: Cisco Virtual Private Network (VPN) Client software 2.x.x, and 3.x before 3.5.1C, does not properly verify that certificate DN fields match those of the certificate from the VPN Concentrator, which allows remote attackers to conduct man-in-the-middle attacks.
How severe is CVE-2002-1106?: CVE-2002-1106 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2002-1106 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-1106?: CVE-2002-1106 primarily affects Cisco Vpn Client. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-1106?: 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-2002-1106 published?: CVE-2002-1106 was published on 2002-10-04 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:cisco:vpn_client:2.0:*:windows:*:*:*:*:*
cpe:2.3:a:cisco:vpn_client:3.0:*:windows:*:*:*:*:*
cpe:2.3:a:cisco:vpn_client:3.1:*:windows:*:*:*:*:*
cpe:2.3:a:cisco:vpn_client:3.5.1:*:windows:*:*:*:*:*

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