CVE-2012-6399: Cisco Webex

Medium severity, CVSS 5.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Cisco WebEx 4.1 on iOS does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, aka Bug ID CSCud94176.

Affected products

• Cisco Webex: version 4.1 only

Published 2013-05-27. Last modified 2026-06-16.