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CVE-2018-4435

35
FAUCET Score

CVE-2018-4435 is a logic issue affecting Apple's iOS, macOS, tvOS, and watchOS operating systems prior to versions 12.1.1, 10.14.2, 12.1.1, and 5.1.2 respectively. This vulnerability, rated High severity with a CVSS score of 7.8, could allow an attacker to achieve high confidentiality, integrity, and availability impacts through local access and user interaction. While not actively exploited in the wild and absent from the KEV catalog, a public exploit (EDB-45960) demonstrating incorrect maximum protection in XNU POSIX shared memory mappings exists. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 12.1.1CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 10.14.2CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
< 12.1.1CPE matchmatch criteria
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
< 5.1.2CPE matchmatch criteria
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.09%
Probability of exploitation in next 30 days
EPSS Percentile
86.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-45960 · Dec 11, 2018
This CVE's current EPSS score of 0.0309 is in the 87th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.3 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 / kb/HT209340
Vendor Advisory
support.apple.com / kb/HT209341
Vendor Advisory
support.apple.com / kb/HT209342
Vendor Advisory
support.apple.com / kb/HT209343
Vendor Advisory