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CVE-2018-4086

19
FAUCET Score

CVE-2018-4086 is a vulnerability in Apple's Security component affecting iOS before 11.2.5, macOS before 10.13.3, tvOS before 11.2.5, and watchOS before 4.2.2. This medium-severity flaw allows remote attackers to spoof certificate validation through crafted name constraints, potentially leading to integrity compromise. The attack requires high complexity but no user interaction. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 11.2.5CPE matchmatch criteria
cpe:2.3:a:apple:apple_tv:*:*:*:*:*:*:*:*
< 11.2.5CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 10.13.3CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
< 4.2.2CPE matchmatch criteria
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.97%
Probability of exploitation in next 30 days
EPSS Percentile
58.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0097 is in the 16th percentile among its peer group of 19,956 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

support.apple.com / HT208462
Vendor Advisory
support.apple.com / HT208463
Vendor Advisory
support.apple.com / HT208464
Vendor Advisory
support.apple.com / HT208465
Vendor Advisory
securityfocus.com / bid/102782
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040265
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040267
Third Party AdvisoryVDB Entry