Is CVE-2011-0199 being actively exploited?

CVE-2011-0199 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-0199?

CVE-2011-0199 has a CVSS 3.1 base score of 5.9 (MEDIUM).

CVE-2011-0199

MEDIUM · CVSS 5.9EPSS 0.8%EU EUVD

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.

Key facts

CVSS score: 5.9 (v3.1)
Severity: MEDIUM
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-295
EPSS score: 0.8% (55th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-0225)
Published: June 24, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-0225 in the EU Vulnerability Database. Last updated in EUVD on January 21, 2025.

View on the EU Vulnerability Database

Affected products

apple / mac os x
apple / mac os x server

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Apple Mac OS X 10.6 - Apple Inc. - Common Criteria BSI-DSZ-CC-0536-2010 - archived

References

http://lists.apple.com/archives/security-announce/2011//Jun/msg00000.html(Mailing List, Patch, Vendor Advisory)
http://support.apple.com/kb/HT4723(Patch, Vendor Advisory)
http://www.securityfocus.com/bid/48447(Broken Link, Third Party Advisory, VDB Entry)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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