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CVE-2011-3422

MEDIUM · CVSS 4.3EPSS 0.9%EU EUVD

The Keychain implementation in Apple Mac OS X 10.6.8 and earlier does not properly handle an untrusted attribute of a Certification Authority certificate, which makes it easier for man-in-the-middle attackers to spoof arbitrary SSL servers via an Extended Validation certificate, as demonstrated by https access with Safari.

Key facts

CVSS score
4.3 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE)
CWE-20
EPSS score
0.9% (59th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2011-3385)
Published
September 12, 2011
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-3385 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

  • apple / mac os x
  • apple / mac os x
  • apple / mac os x
  • apple / mac os x
  • apple / mac os x
  • apple / mac os x
  • apple / mac os x
  • apple / mac os x
  • apple / mac os x
  • apple / mac os x server
  • apple / mac os x server
  • apple / mac os x server
  • apple / mac os x server
  • apple / mac os x server
  • apple / mac os x server
  • apple / mac os x server
  • apple / mac os x server
  • apple / mac os x server

Certified products that may be affected

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

References

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

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