Is CVE-2018-4344 actively exploited?

Yes. KEV Intelligence tracks CVE-2018-4344 as a known exploited vulnerability. Confidence is confirmed.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2018-4344. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2018-4344 affects Apple iOS and 3 other products. Reported affected version: Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.

Yes. CVE-2018-4344 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2018-4344

iOS

Apple / iOS · Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5

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Severity: CVSS 7.8 · High
Confidence: Confirmed
Exploit status: Exploited in the wild
EPSS: 2.9%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2018-4344 is an unauthenticated vulnerability affecting Apple iOS and 3 other products. A memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 12, macOS...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.

Who is affected?

Apple / iOS versions prior to: ios 12, macos mojave 10.14, tvos 12, watchos 5.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

A memory corruption issue was addressed with improved memory handling

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.

Vendor Product Affected Status

n/a iOS, macOS, tvOS, watchOS Versions prior to: iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5 Affected

Published: 03 Apr 2019
Exploitation Reported: 27 Jun 2022
Attack vector: Local
Complexity: Low
Privileges: None
User interaction: Required

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2018-4344
support.apple.com/kb/HT209107 support.apple.com · CVE Record https://support.apple.com/kb/HT209107
support.apple.com/kb/HT209106 support.apple.com · CVE Record https://support.apple.com/kb/HT209106
support.apple.com/kb/HT209139 support.apple.com · CVE Record https://support.apple.com/kb/HT209139
support.apple.com/kb/HT209108 support.apple.com · CVE Record https://support.apple.com/kb/HT209108

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 27 Jun 2022

Independent exploitation attestation added to the KEV Intelligence record.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source	Added
CISA First	2022-06-27 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

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No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

7.8 High

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

EPSS

2.9%

Weaknesses

Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-119

All CVSS Scores

CVSS v3.1 7.8 High

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

CVSS v2.0 9.3 High

AV:N/AC:M/Au:N/C:C/I:C/A:C

Timeline

From disclosure to observed exploitation

27 Jun 2022
Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
03 Apr 2019
CVE published

Vulnerability disclosed publicly
02 Jan 2018
CVE ID reserved

Identifier reserved by the CNA

Pro API

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Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2018-4344

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2018-4344",
  "confidence": "Confirmed",
  "cvss_score": 7.8,
  "cvss_estimated": false,
  "epss_score": 0.02908,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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