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.
References (3)
Core 3
Core References
Vendor Advisory vendor-advisory
x_refsource_cisco
http://www.cisco.com/warp/public/707/vpnclient-multiple2-vuln-pub.shtml
Third Party Advisory, VDB Entry vdb-entry
x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/10045
Vendor Advisory vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/5652
Scores
EPSS
0.0095
EPSS Percentile
57.7%
Details
Status
published
Products (4)
cisco/vpn_client
2.0
cisco/vpn_client
3.0
cisco/vpn_client
3.1
cisco/vpn_client
3.5.1
Published
Oct 04, 2002
Tracked Since
Feb 18, 2026