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

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: yes — in CISA KEV since 2026-03-20
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-30 · updated 2026-09-21
Weakness: CWE-119

Description

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.

Affected products

Apple iPadOS: before 18.6 — fixed in 18.6
Apple Iphone Os: before 18.6 — fixed in 18.6
Apple macOS: from 15.0 before 15.6 — fixed in 15.6
Apple Safari: before 18.6 — fixed in 18.6
Apple tvOS: before 18.6 — fixed in 18.6
Apple visionOS: before 2.6 — fixed in 2.6
Apple watchOS: before 11.6 — fixed in 11.6
Red Hat Enterprise Linux: 6.0, 7.0, 8.0, 9.0
RedHat Enterprise Linux Aus: 8.2, 8.4, 8.6
RedHat Enterprise Linux Els: 7.0
RedHat Enterprise Linux Eus: 8.4, 8.6, 9.4
RedHat Enterprise Linux Tus: 8.6, 8.8
RedHat Enterprise Linux Update Services For Sap Solutions: 8.6, 8.8, 9.0, 9.2
Webkit: before 2.50.0 — fixed in 2.50.0
Wpewebkit Wpe Webkit: before 2.50.0 — fixed in 2.50.0

How to fix

Upgrade to a fixed version: Apple iPadOS 18.6; Apple Iphone Os 18.6; Apple macOS 15.6; Apple Safari 18.6; Apple tvOS 18.6; Apple visionOS 2.6; Apple watchOS 11.6; Webkit 2.50.0; Wpewebkit Wpe Webkit 2.50.0. Check the vendor advisory for mitigations.

References

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