VULNERABILITY INTELLIGENCE

CVE-2004-2621

CVSS score4 MEDIUM
EPSS probability0.75%
CISA KEVNot currently listed
Published2004-12-31
Last modified2026-06-16
CVSS vectorAV:N/AC:H/Au:N/C:P/I:P/A:N

Description

Nortel Contivity VPN Client 2.1.7, 3.00, 3.01, 4.91, and 5.01, when opening a VPN tunnel, does not check the gateway certificate until after a dialog box has been displayed to the user, which creates a race condition that allows remote attackers to perform a man-in-the-middle (MITM) attack.

Primary references