Free and open · new CVEs checked every 20 minutesStatusRSSOpen dataContact

CVE-2023-43000: Apple Multiple products Use-After-Free Vulnerability

83
Patch now
HIGH 8.8EXPLOITEDUPGRADEUPGRADEUPGRADE

CVE-2023-43000 is a high-severity flaw (CVSS 8.8) affecting safari, ipados, iphone os, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari 16.6, iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content may lead to memory corruption.

Why this priority

  • High severity
  • EPSS top 9%: very likely to be exploited
  • Exploited in the wild (CISA KEV)
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance4.0% (top 9%)
CISA exploited listYes, fix due 2026-03-26
WeaknessCWE-416
Published2025-11-05
Last modified2026-10-28
Publisher (CNA): Apple Inc. · Vendor: apple

Share: LinkedIn · X · Reddit

Last updated 2026-10-28 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

apple safari UPGRADE
Affected: < 16.6
Fixed in: 16.6
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy safari || rpm -q safari || safari --version
2. UPGRADE to 16.6 (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 ipados UPGRADE
Affected: < 15.8.7 · >= 16.0 and < 16.6
Fixed in: 15.8.7, 16.6
Safe to downgrade to: a release before 16.0
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 iphone os UPGRADE
Affected: < 15.8.7 · >= 16.0 and < 16.6
Fixed in: 15.8.7, 16.6
Safe to downgrade to: a release before 16.0
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 macos UPGRADE
Affected: < 13.5
Fixed in: 13.5
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.

Exact fixes by distribution

Fedora 46 · amule · FIXED · 3.2.0-1.fc46 · FEDORA-2026-4feb2647b0 · source
sudo dnf upgrade --advisory=FEDORA-2026-4feb2647b0
Fedora ELN · mysql9.7 · FIXED · 9.7.4-3.eln159 · FEDORA-2026-ea1c50e49b · source
sudo dnf upgrade --advisory=FEDORA-2026-ea1c50e49b
Ubuntu 22.04 · webkit2gtk · FIXED · 2.42.1-0ubuntu0.22.04.1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.42.1-0ubuntu0.22.04.1" && echo PATCHED || echo STILL-VULNERABLE
Ubuntu 24.04 · webkit2gtk · NOT AFFECTED
Ubuntu 25.04 · webkit2gtk · NOT AFFECTED
Ubuntu 25.10 · webkit2gtk · NOT AFFECTED
Debian 12 · webkit2gtk · FIXED · 2.42.1-1~deb12u1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.42.1-1~deb12u1" && echo PATCHED || echo STILL-VULNERABLE
Debian 13 · webkit2gtk · FIXED · 2.42.0-1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.42.0-1" && echo PATCHED || echo STILL-VULNERABLE
Debian 12 · wpewebkit · NO FIX YET
Debian 13 · wpewebkit · FIXED · 2.42.0-1
sudo apt update && sudo apt install --only-upgrade wpewebkit dpkg --compare-versions "$(dpkg-query -W -f='${Version}' wpewebkit)" ge "2.42.0-1" && echo PATCHED || echo STILL-VULNERABLE
RHEL 7 Extended Lifecycle Support · webkitgtk4 · FIXED · webkitgtk4-2.48.3-2.el7_9
sudo dnf upgrade --advisory=RHSA-2025:10364 rpm -q webkitgtk4
RHEL 8 · webkit2gtk3 · FIXED · webkit2gtk3-2.42.5-1.el8
sudo dnf upgrade --advisory=RHSA-2024:2982 rpm -q webkit2gtk3
RHEL 8.2 Advanced Update Support · webkit2gtk3 · FIXED · webkit2gtk3-2.46.3-1.el8_2
sudo dnf upgrade --advisory=RHSA-2024:9680 rpm -q webkit2gtk3
RHEL 8.4 Advanced Mission Critical Update Support · webkit2gtk3 · FIXED · webkit2gtk3-2.46.3-1.el8_4
sudo dnf upgrade --advisory=RHSA-2024:9679 rpm -q webkit2gtk3
RHEL 8.4 Telecommunications Update Service · webkit2gtk3 · FIXED · webkit2gtk3-2.46.3-1.el8_4
sudo dnf upgrade --advisory=RHSA-2024:9679 rpm -q webkit2gtk3
Amazon Linux 2 · see advisory · FIXED · ALAS2-2024-2427 · source
sudo yum update --advisory=ALAS2-2024-2427
Verify at the official source NVD · CVE Program · CISA KEV catalog · 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-2023-43000?

safari: upgrade to 16.6; ipados: upgrade to 15.8.7, 16.6; iphone os: upgrade to 15.8.7, 16.6. Exact commands for each OS are on this page.

Is CVE-2023-43000 being exploited?

Yes. CVE-2023-43000 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2023-43000 affect?

CVE-2023-43000 affects safari, ipados, iphone os. Severity is high (CVSS 8.8). A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari 16.6, iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content may lead to mem

How urgent is CVE-2023-43000?

Priority 83/100. High severity; EPSS top 9%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference

Software pages

iOS vulnerabilities · macOS vulnerabilities · Safari vulnerabilities · Apple Safari and WebKit vulnerabilities · iPadOS 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.