CVE-2018-4344

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.024 · 84 %ileEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV

Likely / severe?

2.37% (84th) EPSS

CVSS 9.3 · high

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2022-06-27remediate by 2022-07-18

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-27

Apple Multiple Products Memory Corruption Vulnerability

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

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondaryexploitability 1.8 · impact 5.9

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-119US

affected products (9)

Products and version ranges known to be affected.

n/a iOS, macOS, tvOS, watchOS≤ Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5enisa_euvdEU
Apple Inc. MacOS≤ 10.14fstec_bduRU
Apple Inc. iOS≤ 12fstec_bduRU
Apple Inc. tvOS≤ 12fstec_bduRU
Apple Inc. watchOS≤ 5fstec_bduRU
apple iphone os< 12.0nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple mac os x< 10.14nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple tvos< 12.0nvdUScpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple watchos< 5.0nvdUScpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2019-04-03modified 2026-06-17

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+21023 more

references (15)

External citations — patches, advisories, analysis.

scry

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