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Vulnerability record · CVE-2002-1106 · published 4 October 2002

CVE-2002-1106: Cisco vpn client vulnerability

Cisco · Vpn Client

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.

7.5 CVSS 2.0 High EPSS 0.95% · top 40.0%
7.5CVSS 2.0 base score
0.95%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.cisco.com/warp/public/707/vpnclient-multiple2-vuln-pub.shtml Vendor Advisory
http://www.securityfocus.com/bid/5652 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/10045
http://www.cisco.com/warp/public/707/vpnclient-multiple2-vuln-pub.shtml Vendor Advisory
http://www.securityfocus.com/bid/5652 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/10045

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2002-1106), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.