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CVE-2011-3422

17
FAUCET Score

CVE-2011-3422 describes a vulnerability in the Keychain implementation of Apple Mac OS X 10.6.8 and earlier, where it fails to correctly process untrusted attributes in Certification Authority certificates. This flaw allows man-in-the-middle attackers to spoof arbitrary SSL servers, particularly through the manipulation of Extended Validation certificates, as demonstrated with Safari. With a CVSS score of 4.3, this vulnerability has a network attack vector and medium attack complexity, potentially leading to information integrity compromise (partial) without requiring authentication. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.6.8CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
10.6.0CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.6.0:*:*:*:*:*:*:*
10.6.1CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.6.1:*:*:*:*:*:*:*
10.6.2CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.6.2:*:*:*:*:*:*:*
10.6.3CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.6.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.86%
Probability of exploitation in next 30 days
EPSS Percentile
54.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0086 is in the 12th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.apple.com / archives/security-announce/2012/Feb/msg00000.html
exchange.xforce.ibmcloud.com / vulnerabilities/69556
support.apple.com / kb/HT5130
computerworld.com / s/article/9219669/Mac_OS_X_can_t_properly_revoke_dodgy_digital_certificates
securityfocus.com / bid/49429
securitytracker.com / id