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Public proof of conceptFix available

CVE-2018-4197

A public proof of concept exists; no exploitation attested.

  • Published2019-04-03
  • Fixed in7.7
  • WeaknessCWE-416

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 use after free issue was addressed with improved memory management. This issue affected versions prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

Timeline

dates in UTC
  1. 2018-09-25Exploit-DB entryExploit-DB

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-2018-4197?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-4197?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Apple icloudversion to verify
BranchAffectedFixed in
7.7< 7.77.7
Apple iphone os
BranchAffectedFixed in
12.0< 12.012.0
Apple itunesversion to verify
BranchAffectedFixed in
12.9< 12.912.9

2 more products in the sources.

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

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • qtwebkit-opensource-srcUbuntu:24.04:LTSall versions · no fixed version listed
  • qtwebkit-opensource-srcUbuntu:22.04:LTSall versions · no fixed version listed
  • qtwebkit-opensource-srcUbuntu:20.04:LTSall versions · no fixed version listed
  • webkit2gtkUbuntu:18.04:LTSall versions · fixed in 2.22.2-0ubuntu0.18.04.1
  • webkit2gtkDebian:14all versions · fixed in 2.22.0-2
  • webkit2gtkDebian:13all versions · fixed in 2.22.0-2
  • webkit2gtkDebian:12all versions · fixed in 2.22.0-2
  • webkit2gtk3SUSE:OpenStack Cloud 7all versions · fixed in 2.22.4-2.29.3

19 more package ranges on OSV.dev

Full record on NVD

Fix

  1. Update Apple icloud to 7.7

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-45489
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.08.8read 2026-10-23
  • NVDCVSS 2.06.8read 2026-10-23
  • NVDweakness (CWE)CWE-416read 2026-10-23
  • FIRST EPSSEPSS score9.3 %2026-11-03
  • Exploit-DBdetectionread 2026-11-02
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/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
Modified

Frequently asked questions

What is CVE-2018-4197?

A use after free issue was addressed with improved memory management. This issue affected versions prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

Is CVE-2018-4197 actively exploited?

Active exploitation of CVE-2018-4197 has not been confirmed. Its EPSS score was 9.3% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-4197?

CVE-2018-4197 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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Sources for this record