How severe is CVE-2012-6399?

CVE-2012-6399 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2012-6399 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-6399?

CVE-2012-6399 affects Cisco Webex. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-6399?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-6399 published?

CVE-2012-6399 was published on 2013-05-27 and last updated on 2026-06-16.

CVE-2012-6399

CVE-2012-6399 is a medium-severity vulnerability in Cisco Webex with a CVSS 2.0 base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.8)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Webex
Published: 2013-05-27
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2012-6399?: 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.
How severe is CVE-2012-6399?: CVE-2012-6399 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2012-6399 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-6399?: CVE-2012-6399 affects Cisco Webex. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-6399?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-6399 published?: CVE-2012-6399 was published on 2013-05-27 and last updated on 2026-06-16.

References

http://secunia.com/advisories/51412

Affected products (1)

cpe:2.3:a:cisco:webex:4.1:-:*:*:*:iphone_os:*:*

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