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CVE-2018-4209

In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS...

8.8 HighFix available

CVE-2018-4209 is a high vulnerability (CVSS 8.8) in Apple Icloud, published September 28, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.06%, the 81st percentile. Fixed in webkit2gtk 2.22.0-2.

In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, unexpected interaction causes an ASSERT failure. This issue was addressed with improved checks.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.06%Down 1.0 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.8

In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, unexpected interaction causes an ASSERT failure. This issue was addressed with improved checks.

Record
CVE-2018-4209
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, unexpected interaction causes an ASSERT failure. This issue was addressed with improved checks.

Record
CVE-2018-4209
Updated
2026-11-02
EUVDEUVD-2018-15995 No score

In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, unexpected interaction causes an ASSERT failure. This issue was addressed with improved checks.

Record
EUVD-2018-15995
Updated
2026-11-03
GitHub AdvisoriesGHSA-m9mv-7x4j-x2cw 8.8

In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS...

In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, unexpected interaction causes an ASSERT failure. This issue was addressed with improved checks.

Record
GHSA-m9mv-7x4j-x2cw
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
OSV 8.8

In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, unexpected interaction causes an ASSERT failure. This issue was addressed with improved checks.

Record
CVE-2018-4209
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-4209 8.8

In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, unexpected interaction causes an ASSERT failure. This issue was addressed with improved checks.

Record
DEBIAN-CVE-2018-4209
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 5 moreShow less
OSVUBUNTU-CVE-2018-4209 8.8

In iOS before 11.3, Safari before 11.1, iCloud for Windows before 7.4, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, unexpected interaction causes an ASSERT failure. This issue was addressed with improved checks.

Record
UBUNTU-CVE-2018-4209
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2019:0081-1 No score

Security update for webkit2gtk3

This update for webkit2gtk3 to version 2.22.5 fixes the following issues:

Security issues fixed:

  • CVE-2018-4372, CVE-2018-4345, CVE-2018-4386, CVE-2018-4375, CVE-2018-4376, CVE-2018-4378, CVE-2018-4382, CVE-2018-4392, CVE-2018-4416, CVE-2018-4191, CVE-2018-4197, CVE-2018-4299, CVE-2018-4306, CVE-2018-4309, CVE-2018-4312, CVE-2018-4314, CVE-2018-4315, CVE-2018-4316, CVE-2018-4317, CVE-2018-4318, CVE-2018-4319, CVE-2018-4323, CVE-2018-4328, CVE-2018-4358, CVE-2018-4359, CVE-2018-4361, CVE-2018-4373, CVE-2018-4162, CVE-2018-4163, CVE-2018-4165, CVE-2018-11713, CVE-2018-4207, CVE-2018-4208, CVE-2018-4209, CVE-2018-4210, CVE-2018-4212, CVE-2018-4213, CVE-2018-4437, CVE-2018-4438, CVE-2018-4441, CVE-2018-4442, CVE-2018-4443, CVE-2018-4464 (bsc#1119558, bsc#1116998, bsc#1110279)

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2019:0081-1
Updated
2026-11-02
OSVSUSE-SU-2019:0059-1 No score

Security update for webkit2gtk3

This update for webkit2gtk3 to version 2.22.4 fixes the following issues:

Security issues fixed:

CVE-2018-4191, CVE-2018-4197, CVE-2018-4299, CVE-2018-4306, CVE-2018-4309, CVE-2018-4392, CVE-2018-4312, CVE-2018-4314, CVE-2018-4315, CVE-2018-4316, CVE-2018-4317, CVE-2018-4318, CVE-2018-4319, CVE-2018-4323, CVE-2018-4328, CVE-2018-4358, CVE-2018-4359, CVE-2018-4361, CVE-2018-4345, CVE-2018-4372, CVE-2018-4373, CVE-2018-4375, CVE-2018-4376, CVE-2018-4416, CVE-2018-4378, CVE-2018-4382, CVE-2018-4386 (bsc#1110279, bsc#1116998).

Record
SUSE-SU-2019:0059-1
Updated
2026-11-02
OSVSUSE-SU-2019:0092-1 No score

Security update for webkit2gtk3

This update for webkit2gtk3 to version 2.22.5 fixes the following issues:

Security issues fixed:

  • CVE-2018-4372, CVE-2018-4345, CVE-2018-4386, CVE-2018-4375, CVE-2018-4376, CVE-2018-4378, CVE-2018-4382, CVE-2018-4392, CVE-2018-4416, CVE-2018-4191, CVE-2018-4197, CVE-2018-4299, CVE-2018-4306, CVE-2018-4309, CVE-2018-4312, CVE-2018-4314, CVE-2018-4315, CVE-2018-4316, CVE-2018-4317, CVE-2018-4318, CVE-2018-4319, CVE-2018-4323, CVE-2018-4328, CVE-2018-4358, CVE-2018-4359, CVE-2018-4361, CVE-2018-4373, CVE-2018-4162, CVE-2018-4163, CVE-2018-4165, CVE-2018-11713, CVE-2018-4207, CVE-2018-4208, CVE-2018-4209, CVE-2018-4210, CVE-2018-4212, CVE-2018-4213, CVE-2018-4437, CVE-2018-4438, CVE-2018-4441, CVE-2018-4442, CVE-2018-4443, CVE-2018-4464 (bsc#1119558, bsc#1116998, bsc#1110279)
Record
SUSE-SU-2019:0092-1
Updated
2026-11-02
OSVUSN-3781-1 No score

webkit2gtk vulnerabilities

A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

Record
USN-3781-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
webkit2gtk
Debian:12
 before 2.22.0-2
2.22.0-2
webkit2gtk
Debian:13
 before 2.22.0-2
2.22.0-2
webkit2gtk
Debian:14
 before 2.22.0-2
2.22.0-2
webkit2gtk3
SUSE:OpenStack Cloud 7
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Desktop 12 SP3
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Desktop 12 SP4
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Software Development Kit 12 SP3
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Software Development Kit 12 SP4
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Server 12 SP2-LTSS
 before 2.22.4-2.29.3
2.22.4-2.29.3
Show 22 moreShow less
Affected packages
PackageAffectedFixed
webkit2gtk3
SUSE:Linux Enterprise Server 12 SP2-BCL
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Server 12 SP3
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Server 12 SP4
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Workstation Extension 12 SP3
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Workstation Extension 12 SP4
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Enterprise Storage 4
 before 2.22.4-2.29.3
2.22.4-2.29.3
webkit2gtk3
SUSE:Linux Enterprise Module for Basesystem 15
 before 2.22.5-3.13.1
2.22.5-3.13.1
webkit2gtk3
SUSE:Linux Enterprise Module for Desktop Applications 15
 before 2.22.5-3.13.1
2.22.5-3.13.1
qtwebkit-opensource-src
Ubuntu:16.04:LTS
 All versions, plus listed versions
5.4.2+dfsg-1ubuntu2.15.5.1+dfsg-2ubuntu1
 None known
webkit2gtk
Ubuntu:16.04:LTS
 All versions, plus listed versions
2.8.5+dfsg1-32.10.3+dfsg1-12.10.4+dfsg1-12.10.5-12.10.6-1
Show 21 moreShow less
2.10.6-1ubuntu12.10.8-1ubuntu12.10.9-1ubuntu12.12.5-0ubuntu0.16.04.12.14.2-0ubuntu0.16.04.12.14.3-0ubuntu0.16.04.12.14.5-0ubuntu0.16.04.12.16.1-0ubuntu0.16.04.12.16.1-0ubuntu0.16.04.22.16.2-0ubuntu0.16.04.12.16.3-0ubuntu0.16.04.12.16.6-0ubuntu0.16.04.12.18.0-0ubuntu0.16.04.22.18.3-0ubuntu0.16.04.12.18.4-0ubuntu0.16.04.12.18.5-0ubuntu0.16.04.12.18.6-0ubuntu0.16.04.12.20.1-0ubuntu0.16.04.12.20.2-0ubuntu0.16.04.12.20.3-0ubuntu0.16.04.12.20.5-0ubuntu0.16.04.1
 None known
qtwebkit-source
Ubuntu:16.04:LTS
 All versions, plus listed versions
2.3.2-0ubuntu102.3.2-0ubuntu11
 None known
webkitgtk
Ubuntu:16.04:LTS
 All versions, plus listed versions
2.4.9-2ubuntu22.4.10-0ubuntu12.4.11-0ubuntu0.1
 None known
webkit2gtk
Ubuntu:18.04:LTS
 before 2.22.2-0ubuntu0.18.04.1, plus listed versions
2.18.0-22.18.0-2build12.18.2-12.18.3-12.18.4-1
Show 10 moreShow less
2.18.6-12.19.91-1ubuntu12.19.92-12.20.0-12.20.0-22.20.0-2ubuntu12.20.1-12.20.2-0ubuntu0.18.04.12.20.3-0ubuntu0.18.04.12.20.5-0ubuntu0.18.04.1
2.22.2-0ubuntu0.18.04.1
qtwebkit-opensource-src
Ubuntu:18.04:LTS
 All versions, plus listed versions
5.9.1+dfsg-5ubuntu15.9.1+dfsg-5ubuntu35.212.0~alpha2-5build25.212.0~alpha2-5build45.212.0~alpha2-75.212.0~alpha2-7build25.212.0~alpha2-7ubuntu1
 None known
qtwebkit-source
Ubuntu:18.04:LTS
 All versions, plus listed versions
2.3.2-0ubuntu13
 None known
webkitgtk
Ubuntu:18.04:LTS
 All versions, plus listed versions
2.4.11-32.4.11-3ubuntu22.4.11-3ubuntu3
 None known
qtwebkit-opensource-src
Ubuntu:20.04:LTS
 All versions, plus listed versions
5.212.0~alpha3-35.212.0~alpha3-55.212.0~alpha3-65.212.0~alpha3-75.212.0~alpha4-15.212.0~alpha4-1ubuntu15.212.0~alpha4-1ubuntu25.212.0~alpha4-1ubuntu2.1
 None known
qtwebkit-opensource-src
Ubuntu:22.04:LTS
 All versions, plus listed versions
5.212.0~alpha4-125.212.0~alpha4-135.212.0~alpha4-145.212.0~alpha4-14build15.212.0~alpha4-14ubuntu25.212.0~alpha4-15ubuntu1
 None known
qtwebkit-opensource-src
Ubuntu:24.04:LTS
 All versions, plus listed versions
5.212.0~alpha4-335.212.0~alpha4-33build15.212.0~alpha4-345.212.0~alpha4-34ubuntu35.212.0~alpha4-34ubuntu45.212.0~alpha4-36
 None known
webkit2gtk3
openSUSE:Leap 15.0
 before 2.22.5-lp150.2.9.1
2.22.5-lp150.2.9.1

History

History
WhenChangedSources
2026-11-03aliasesEUVD
2026-11-02createdCVE List, GitHub Advisories, NVD, OSV

References

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