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CVE-2025-43529: Apple Multiple Products Use-After-Free WebKit Vulnerability

85
Patch now
HIGH 8.8EXPLOITEDUPGRADEUPGRADEUPGRADE

CVE-2025-43529 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 Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on vers

Why this priority

  • High severity
  • EPSS top 2%: 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 chance25.7% (top 2%)
CISA exploited listYes, fix due 2026-01-05
WeaknessCWE-416
Published2025-12-17
Last modified2026-10-07
Publisher (CNA): Apple Inc. · Vendor: apple

Share: LinkedIn · X · Reddit

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

apple safari UPGRADE
Affected: < 26.2
Fixed in: 26.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy safari || rpm -q safari || safari --version
2. UPGRADE to 26.2 (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: < 18.7.3 · >= 26.0 and < 26.2
Fixed in: 18.7.3, 26.2
Safe to downgrade to: a release before 26.0
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: < 18.7.3 · >= 26.0 and < 26.2
Fixed in: 18.7.3, 26.2
Safe to downgrade to: a release before 26.0
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: >= 26.0 and < 26.2
Fixed in: 26.2
Safe to downgrade to: a release before 26.0
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 tvos UPGRADE
Affected: < 26.2
Fixed in: 26.2
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 visionos UPGRADE
Affected: < 26.2
Fixed in: 26.2
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.

Exact fixes by distribution

Fedora 46 · R · FIXED · 4.6.2-1.fc46 · FEDORA-2026-1dd919a262 · source
sudo dnf upgrade --advisory=FEDORA-2026-1dd919a262
Fedora ELN · perl-Mail-AuthenticationResults · FIXED · 2.20261029-1.eln159 · FEDORA-2026-a2c11d7da6 · source
sudo dnf upgrade --advisory=FEDORA-2026-a2c11d7da6
Ubuntu 25.10 · webkit2gtk · FIXED · 2.50.4-0ubuntu0.25.10.1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.50.4-0ubuntu0.25.10.1" && echo PATCHED || echo STILL-VULNERABLE
Ubuntu 22.04 · webkit2gtk · FIXED · 2.50.4-0ubuntu0.22.04.1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.50.4-0ubuntu0.22.04.1" && echo PATCHED || echo STILL-VULNERABLE
Ubuntu 24.04 · webkit2gtk · FIXED · 2.50.4-0ubuntu0.24.04.1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.50.4-0ubuntu0.24.04.1" && echo PATCHED || echo STILL-VULNERABLE
Ubuntu 25.04 · webkit2gtk · FIXED · 2.50.4-0ubuntu0.25.04.1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.50.4-0ubuntu0.25.04.1" && echo PATCHED || echo STILL-VULNERABLE
Debian 12 · webkit2gtk · FIXED · 2.50.4-1~deb12u1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.50.4-1~deb12u1" && echo PATCHED || echo STILL-VULNERABLE
Debian 13 · webkit2gtk · FIXED · 2.50.4-1~deb13u1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.50.4-1~deb13u1" && echo PATCHED || echo STILL-VULNERABLE
Debian 12 · wpewebkit · NO FIX YET
Debian 13 · wpewebkit · NO FIX YET
RHEL 7 Extended Lifecycle Support · webkitgtk4 · FIXED · webkitgtk4-2.50.4-2.el7_9
sudo dnf upgrade --advisory=RHSA-2025:23975 rpm -q webkitgtk4
RHEL 8 · webkit2gtk3 · FIXED · webkit2gtk3-2.50.4-1.el8_10
sudo dnf upgrade --advisory=RHSA-2025:23663 rpm -q webkit2gtk3
RHEL 8.2 Advanced Update Support · webkit2gtk3 · FIXED · webkit2gtk3-2.50.4-1.el8_2
sudo dnf upgrade --advisory=RHSA-2025:23969 rpm -q webkit2gtk3
RHEL 8.4 Advanced Mission Critical Update Support · webkit2gtk3 · FIXED · webkit2gtk3-2.50.4-1.el8_4
sudo dnf upgrade --advisory=RHSA-2025:23967 rpm -q webkit2gtk3
RHEL 8.4 Extended Update Support Long-Life Add-On · webkit2gtk3 · FIXED · webkit2gtk3-2.50.4-1.el8_4
sudo dnf upgrade --advisory=RHSA-2025:23967 rpm -q webkit2gtk3
Amazon Linux 2 · see advisory · FIXED · ALAS2-2025-3114 · source
sudo yum update --advisory=ALAS2-2025-3114

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

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-2025-43529?

safari: upgrade to 26.2; ipados: upgrade to 18.7.3, 26.2; iphone os: upgrade to 18.7.3, 26.2. Exact commands for each OS are on this page.

Is CVE-2025-43529 being exploited?

Yes. CVE-2025-43529 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2025-43529 affect?

CVE-2025-43529 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 Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing malicious

How urgent is CVE-2025-43529?

Priority 85/100. High severity; EPSS top 2%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference

Software pages

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

Related CVEs

References

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