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CVE-2018-4344

63
FAUCET Score

CVE-2018-4344 is a critical memory corruption vulnerability affecting Apple's iOS (prior to 12), macOS Mojave (prior to 10.14), tvOS (prior to 12), and watchOS (prior to 5). With a CVSS score of 7.8 (HIGH), it allows an unauthenticated attacker to achieve high impact to confidentiality, integrity, and availability through user interaction, indicating a significant risk. This flaw has been actively exploited in the wild, as confirmed by its presence in the KEV catalog, and has garnered notable community discussion and media coverage, including reports of spyware deployment against affected users. Despite its active exploitation, no public exploit code is available in Metasploit, Nuclei, or ExploitDB.

Impacted Technologies

VendorProductVersion(s)CPE
< 12.0CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 10.14CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
< 12.0CPE matchmatch criteria
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
< 5.0CPE matchmatch criteria
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
2.94%
Probability of exploitation in next 30 days
EPSS Percentile
85.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
Added to KEV · Jun 27, 2022
This CVE's current EPSS score of 0.0294 is in the 86th 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

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

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
support.apple.com / kb/HT209106
Release NotesVendor Advisory
support.apple.com / kb/HT209107
Release NotesVendor Advisory
support.apple.com / kb/HT209108
Release NotesVendor Advisory
support.apple.com / kb/HT209139
Release NotesVendor Advisory