vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2018-4344

HIGH
7.8
CVSS Score
Published: April 3, 2019 at 05:43 PM UTC
Updated: June 17, 2026 at 01:58 AM UTC
4 products affected across 1 vendormacOSiPhone OStvOS

Using iOS, macOS, tvOS, watchOS by N/A?

Get instant alerts when new vulnerabilities affect iOS, macOS, tvOS, watchOS - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7.8
Exploitation
CISA KEV
Exploit prediction
EPSS 2%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score2.4%

EPSS (Exploit Prediction Scoring System) estimates a 2.4% chance this CVE is exploited in the wild within the next 30 days — higher than 84% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Apple iOS, macOS, tvOS, and watchOS contain a memory corruption vulnerability which can allow for code execution.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Jun 27, 2022
Remediation Due
Jul 18, 2022
1563 days overdue
Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-4344

Description

A memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPhone OS· Apple
95%
v < 12.0Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5
Affected range stops below 12.0, so it looks safe — our inference, not a vendor statement
macOS· Apple
95%
v < 10.14Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5
Affected range stops below 10.14, so it looks safe — our inference, not a vendor statement
tvOS· Apple
95%
v < 12.0Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5
Affected range stops below 12, so it looks safe — our inference, not a vendor statement
watchOS· Apple
95%
v < 5.0Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5
Affected range stops below 5.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://support.apple.com/kb/HT209106
x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://support.apple.com/kb/HT209107
x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://support.apple.com/kb/HT209108
x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://support.apple.com/kb/HT209139
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-4344

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-119

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card