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CVE-2011-3227

22
FAUCET Score

CVE-2011-3227 describes a vulnerability in libsecurity within Apple Mac OS X before version 10.7.2, affecting both standard and server editions. This flaw allows remote attackers to execute arbitrary code or cause a denial of service by exploiting improper error handling during the processing of a nonstandard extension in a Certificate Revocation List (CRL). The attack vector is network-based with medium complexity, potentially leading to partial confidentiality, integrity, and availability impacts. Despite its potential, there is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.7.1CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.0:*:*:*:*:*:*:*
10.0.0CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.0.0:*:*:*:*:*:*:*
10.0.1CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.0.1:*:*:*:*:*:*:*
10.0.2CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.0.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.84%
Probability of exploitation in next 30 days
EPSS Percentile
76.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0184 is in the 57th 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

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

lists.apple.com / archives/Security-announce/2011//Oct/msg00003.html
Vendor Advisory
support.apple.com / kb/HT5002
Vendor Advisory
securityfocus.com / bid/50085