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CVE-2018-4311

The issue was addressed by removing origin information. This issue affected versions prior to iOS...

8.1 HighFix available

The issue was addressed by removing origin information. This issue affected versions prior to iOS 12, watchOS 5, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

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
None

Exploit likelihood

2.06%Unchanged since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.1

The issue was addressed by removing origin information. This issue affected versions prior to iOS 12, watchOS 5, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

Record
CVE-2018-4311
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS 2.0
5.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:N
Weakness
CWE-200
Updated
2026-11-02
CVE List No score

The issue was addressed by removing origin information. This issue affected versions prior to iOS 12, watchOS 5, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

Record
CVE-2018-4311
Updated
2026-11-02
EUVDEUVD-2018-16097 No score

The issue was addressed by removing origin information. This issue affected versions prior to iOS 12, watchOS 5, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

Record
EUVD-2018-16097
Updated
2026-11-03
GitHub AdvisoriesGHSA-8xvx-25f3-w9x7 8.1

The issue was addressed by removing origin information. This issue affected versions prior to iOS...

The issue was addressed by removing origin information. This issue affected versions prior to iOS 12, watchOS 5, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

Record
GHSA-8xvx-25f3-w9x7
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness
CWE-200
Updated
2026-11-02
OSV 8.1

The issue was addressed by removing origin information. This issue affected versions prior to iOS 12, watchOS 5, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

Record
CVE-2018-4311
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2018-4311 8.1

The issue was addressed by removing origin information. This issue affected versions prior to iOS 12, watchOS 5, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

Record
DEBIAN-CVE-2018-4311
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2018-4311 8.1

The issue was addressed by removing origin information. This issue affected versions prior to iOS 12, watchOS 5, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

Record
UBUNTU-CVE-2018-4311
CVSS 3.0
8.1 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
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
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
Show 5 moreShow less
Affected packages
PackageAffectedFixed
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
webkit2gtk
Ubuntu:18.04:LTS
From an advisory covering 24 CVEs
 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

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-4311 is a high vulnerability (CVSS 8.1) 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.

References

Show 30 moreShow less
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