CVE-2011-0199

5.9
MEDIUMCVSS v3.1 Base Score
0.75%
LOW RiskEPSS (53rd percentile)

The Certificate Trust Policy component in Apple Mac OS X before 10.6.8 does not perform CRL checking for Extended Validation (EV) certificates that lack OCSP URLs, which might allow man-in-the-middle attackers to spoof an SSL server via a revoked certificate.

Published: 6/24/2011
Modified: 6/16/2026
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Vulnerability Summary

CVSS v3 Score

5.9MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v2 Score

5.8

AV:N/AC:M/Au:N/C:P/I:P/A:N

EPSS Score (Exploitation Probability)

0.75%LOW Exploitation Risk
53rd percentile

This vulnerability has a 0.75% probability of being exploited in the next 30 days, ranking higher than 53% of all scored CVEs.

CWE Classification

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