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Unrated severityNVD Advisory· Published Dec 31, 2004· Updated Apr 16, 2026

CVE-2004-2621

CVE-2004-2621

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.

Affected products

5
  • Nortel/Contivity5 versions
    cpe:2.3:h:nortel:contivity:2.1.7:*:*:*:*:*:*:*+ 4 more
    • cpe:2.3:h:nortel:contivity:2.1.7:*:*:*:*:*:*:*
    • cpe:2.3:h:nortel:contivity:3.00:*:*:*:*:*:*:*
    • cpe:2.3:h:nortel:contivity:3.01:*:*:*:*:*:*:*
    • cpe:2.3:h:nortel:contivity:4.91:*:*:*:*:*:*:*
    • cpe:2.3:h:nortel:contivity:5.01:*:*:*:*:*:*:*

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

6

News mentions

0

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