Free and open · new CVEs checked every 20 minutesStatusRSSOpen dataContact

CVE-2019-6234: A memory corruption issue was addressed with improved memory handling

50
This month
HIGH 8.8UPGRADEUPGRADEUPGRADE

CVE-2019-6234 is a high-severity flaw (CVSS 8.8) affecting safari, iphone os, tvos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 12.1.3, tvOS 12.1.2, Safari 12.0.3, iTunes 12.9.3 for Windows, iCloud for Windows 7.10. Processing maliciously crafted web content may lead to arbitrary code execution.

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance1.8% (top 22%)
CISA exploited listNo
WeaknessCWE-787
Published2019-03-05
Last modified2026-06-17
Publisher (CNA): Apple Inc. · Vendor: apple · webkitgtk

Share: LinkedIn · X · Reddit

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

apple safari UPGRADE
Affected: < 12.0.3
Fixed in: 12.0.3
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy safari || rpm -q safari || safari --version
2. UPGRADE to 12.0.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade safari
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade safari
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
apple iphone os UPGRADE
Affected: < 12.1.3
Fixed in: 12.1.3
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
apple tvos UPGRADE
Affected: < 12.1.2
Fixed in: 12.1.2
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
apple icloud UPGRADE
Affected: < 7.10
Fixed in: 7.10
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy icloud || rpm -q icloud || icloud --version
2. UPGRADE to 7.10 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade icloud
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade icloud
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
apple itunes UPGRADE
Affected: < 12.9.3
Fixed in: 12.9.3
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy itunes || rpm -q itunes || itunes --version
2. UPGRADE to 12.9.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade itunes
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade itunes
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
webkitgtk webkitgtk\+ UPGRADE
Affected: < 2.22.6
Fixed in: 2.22.6
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy webkitgtk+ || rpm -q webkitgtk+ || webkitgtk+ --version
2. UPGRADE to 2.22.6 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade webkitgtk+
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade webkitgtk+
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-6234?

safari: upgrade to 12.0.3; iphone os: upgrade to 12.1.3; tvos: upgrade to 12.1.2. Exact commands for each OS are on this page.

Is CVE-2019-6234 being exploited?

CVE-2019-6234 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-6234 affect?

CVE-2019-6234 affects safari, iphone os, tvos. Severity is high (CVSS 8.8). A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 12.1.3, tvOS 12.1.2, Safari 12.0.3, iTunes 12.9.3 for Windows, iCloud for Windows 7.10. Processing maliciously crafted web content may lead to

How urgent is CVE-2019-6234?

Priority 50/100. High severity

Software pages

Windows vulnerabilities · iOS vulnerabilities · Safari vulnerabilities · Apple Safari and WebKit vulnerabilities · tvOS vulnerabilities

Related CVEs

References

← Back to latest CVEs

Get the weekly exploited-CVE digest by emailThe CVEs being attacked this week and how to fix them. No spam, unsubscribe any time.