How severe is CVE-2018-4344?

CVE-2018-4344 has a CVSS 3.1 base score of 7.8 (HIGH). EPSS estimates a 2.4% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2018-4344: Apple Multiple Products Memory Corruption Vulnerability

CISA Known Exploited Vulnerabilities

Apple Multiple Products Memory Corruption Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-06-27

Remediation due

2022-07-18

Required action
Apply updates per vendor instructions.

CISA 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.

Severity

CVSS 3.1 · CISA7.8 HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Exploitation Context

as of October 13, 2026

All KEV statistics→

CISA added CVE-2018-4344 to the KEV catalog 1,181 days after its CVE record was published.
It is one of 95 Apple entries in the CISA KEV catalog, and one of 26 added in 2022.
Its current EPSS score (2.4%) is higher than that of 10% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
-	iOS, macOS, tvOS, watchOS	Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5

References

4 Links

Other references

Record Details

Published

2019-04-03

Last updated

2025-10-21

Assigner (CNA)

apple

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.