Secuno
ENNL
Book demo

CVE-2018-4344

Apple Multiple Products Memory Corruption

7.8 HIGHActively exploited (CISA KEV)EPSS 2.37%
  1. Published3 Apr 2019
  2. Added to CISA KEV27 Jun 2022
  3. Remediation due18 Jul 2022
Actively exploited (CISA KEV)

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

Added to KEV: 27 Jun 2022Federal remediation due: 18 Jul 2022

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Apple iPhone OS< 12.0
Apple Mac OS X< 10.14
Apple Tvos< 12.0
Apple Watchos< 5.0

Remediation

Fixed in
Apple iPhone OS≥ 12.0
Apple Mac OS X≥ 10.14
Apple Tvos≥ 12.0
Apple Watchos≥ 5.0

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-962658.2
IBM Power Systems Firmware FW1060.00 through FW1060.81 is affected by a vulnerability…
CVE-2026-1089159.9
A vulnerability has been found in Edimax BR-6208AC 1.32. This affects an unknown part…
CVE-2026-1089149.9
A flaw has been found in Edimax BR-6208AC 1.32. Affected by this issue is some unknown…
CVE-2026-1088939.9
A vulnerability was identified in Linksys E1700 up to 1.0.0.4.003. This issue affects…
CVE-2026-10889210.0
A vulnerability was determined in Linksys E1700 1.0.0.4.003. This vulnerability affects…
CVE-2026-840588.1
IBM Guardium Data Protection 12.0, 12.1, and 12.2 is vulnerable to a buffer overrun in…

Frequently asked

Is CVE-2018-4344 being actively exploited?

Yes. CVE-2018-4344 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 27 Jun 2022.

How severe is CVE-2018-4344?

CVE-2018-4344 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 2.37% probability of exploitation.

Which products are affected by CVE-2018-4344?

Affected products include Apple iPhone OS, Apple Mac OS X, Apple Tvos, Apple Watchos.

How do I fix CVE-2018-4344?

Upgrade affected software to a fixed version, for example Apple iPhone OS 12.0, Apple Mac OS X 10.14, Apple Tvos 12.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2018-4344 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.