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CVE-2025-31277: Apple Multiple Products Buffer Overflow Vulnerability

75
Patch now
HIGH 8.8EXPLOITEDUPGRADEUPGRADEUPGRADE

CVE-2025-31277 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.

The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may lead to memory corruption.

Why this priority

  • High severity
  • Exploited in the wild (CISA KEV)

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance1.7% (top 23%)
CISA exploited listYes, fix due 2026-04-03
WeaknessCWE-119, CWE-120
Published2025-07-30
Last modified2026-09-21
Publisher (CNA): Apple Inc. · Vendor: apple

Share: LinkedIn · X · Reddit

Last updated 2026-09-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

apple safari UPGRADE
Affected: < 18.6
Fixed in: 18.6
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy safari || rpm -q safari || safari --version
2. UPGRADE to 18.6 (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: < 18.6
Fixed in: 18.6
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 iphone os UPGRADE
Affected: < 18.6
Fixed in: 18.6
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 macos UPGRADE
Affected: >= 15.0 and < 15.6
Fixed in: 15.6
Safe to downgrade to: a release before 15.0
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: < 18.6
Fixed in: 18.6
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: < 2.6
Fixed in: 2.6
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 22.04 · webkit2gtk · FIXED · 2.50.1-0ubuntu0.22.04.1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.50.1-0ubuntu0.22.04.1" && echo PATCHED || echo STILL-VULNERABLE
Ubuntu 24.04 · webkit2gtk · FIXED · 2.50.1-0ubuntu0.24.04.1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.50.1-0ubuntu0.24.04.1" && echo PATCHED || echo STILL-VULNERABLE
Ubuntu 25.10 · webkit2gtk · FIXED · 2.50.0-2ubuntu1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.50.0-2ubuntu1" && echo PATCHED || echo STILL-VULNERABLE
Debian 12 · webkit2gtk · FIXED · 2.50.1-1~deb12u1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.50.1-1~deb12u1" && echo PATCHED || echo STILL-VULNERABLE
Debian 13 · webkit2gtk · FIXED · 2.50.1-1~deb13u1
sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.50.1-1~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 · webkitgtk4-2.50.0-1.el7_9
sudo dnf upgrade --advisory=RHSA-2025:19352 rpm -q webkitgtk4
RHEL 8 · webkit2gtk3 · FIXED · webkit2gtk3-2.50.0-1.el8_10
sudo dnf upgrade --advisory=RHSA-2025:17802 rpm -q webkit2gtk3
RHEL 8.2 Advanced Update Support · webkit2gtk3 · FIXED · webkit2gtk3-2.50.0-1.el8_2
sudo dnf upgrade --advisory=RHSA-2025:19157 rpm -q webkit2gtk3
RHEL 8.4 Advanced Mission Critical Update Support · webkit2gtk3 · FIXED · webkit2gtk3-2.50.0-1.el8_4
sudo dnf upgrade --advisory=RHSA-2025:19165 rpm -q webkit2gtk3
RHEL 8.4 Extended Update Support Long-Life Add-On · webkit2gtk3 · FIXED · webkit2gtk3-2.50.0-1.el8_4
sudo dnf upgrade --advisory=RHSA-2025:19165 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-2025-31277?

safari: upgrade to 18.6; ipados: upgrade to 18.6; iphone os: upgrade to 18.6. Exact commands for each OS are on this page.

Is CVE-2025-31277 being exploited?

Yes. CVE-2025-31277 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2025-31277 affect?

CVE-2025-31277 affects safari, ipados, iphone os. Severity is high (CVSS 8.8). The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may lead to memory co

How urgent is CVE-2025-31277?

Priority 75/100. High severity; Exploited in the wild (CISA KEV)

Software pages

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

Related CVEs

References

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