CVE-2012-6399

Name: CVE-2012-6399
Creator: NVD / NIST
Published: 2013-05-27T14:55:01.037+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.53%

Last modified Jun 16, 2026

CVE-2012-6399 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

0.53%

40.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Webex	4.1

References

http://secunia.com/advisories/51412Vendor Advisory
http://secunia.com/advisories/51412Vendor Advisory

Timeline

Published: May 27, 2013
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-6399?

How severe is CVE-2012-6399?

Severity scoring for CVE-2012-6399 is pending analysis. The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2012-6399?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-6399?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST