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ExploitedIn CISA KEVFix available

CVE-2018-4344

Exploitation confirmed. First attested on 2022-06-27 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2019-04-03
  • Fixed in12.0
  • WeaknessCWE-119

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2019-04-0318:29CVE publishedNVD
  2. 2022-06-27Added to the CISA KEV catalogCISA KEV
  3. 2022-06-27Listed as exploited by GCVEGCVE
  4. 2022-06-27Exploitation first reportedCISA KEV
  5. 2025-01-2917:43SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-4344?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-4344?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Apple iphone os
BranchAffectedFixed in
12.0< 12.012.0
Apple mac os x
BranchAffectedFixed in
10.14< 10.1410.14
Apple tvos
BranchAffectedFixed in
12.0< 12.012.0

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As apple, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • iOS, macOS, tvOS, watchOS
    Affected
    • = Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2019-04-03

Fix

  1. Update Apple iphone os to 12.0
  2. CISA’s required action: Apply updates per vendor instructions.due 2022-07-18

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-06-27
Patch Due Date
2022-07-18
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2019-04-03
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-486c-fgp8-q4mj

Frequently asked questions

What is CVE-2018-4344?

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.

Is CVE-2018-4344 actively exploited?

Yes. CVE-2018-4344 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-07-18.

What is the CVSS score for CVE-2018-4344?

CVE-2018-4344 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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Sources for this record