CVE-2018-4448

MEDIUM

5.5

CVSS Score

Published: October 27, 2020 at 07:21 PM UTC

Updated: June 17, 2026 at 01:59 AM UTC

4 products affected across 1 vendormacOSiPhone OStvOS

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.3%

Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra, iOS 12.1.1, watchOS 5.1.2, macOS Mojave 10.14.2, Security Update 2018-003 High Sierra, Security Update 2018-006 Sierra, tvOS 12.1.1. A local user may be able to read kernel memory.

Affected

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

iPhone OS · Apple

95%

v < 12.1v < 12.1.1

Affected range stops below 12.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1.1, so it looks safe — our inference, not a vendor statement

macOS · Apple

95%

v < 10.14v < 12.1v < 5.110.12.6 ≤ v < 10.14.410.13.6 ≤ v < 10.14.2

Affected range stops below 10.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.14.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.14.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 12.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.1, so it looks safe — our inference, not a vendor statement

tvOS · Apple

95%

v < 12.1.1

Affected range stops below 12.1.1, so it looks safe — our inference, not a vendor statement

watchOS · Apple

95%

v < 5.1.2

Affected range stops below 5.1.2, 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