CVE-2025-43433CWE-119CWE-120CWE-787

CVE-2025-43433

High · published November 4, 2025

CVSS v3.1
8.8
EPSS
1%
Percentile
67.1
In the wild
Unconfirmed
What it is

⚡ A crafty bit of malicious web content could lead to memory corruption in Safari and other Apple platforms! Think of it as a chef who throws in an unexpected ingredient into a recipe — if the kitchen isn’t prepared, the entire dish could get spoiled, potentially ruining everything. This flaw can disrupt the memory handling in your devices, which is a recipe for disaster! An attacker could exploit this vulnerability to crash applications or even manipulate sensitive data, leading to a chaotic situation where your device might behave erratically. While it hasn't been publicly exploited yet, the potential for mischief is absolutely concerning!

Put simply

Think of it as a chef who throws in an unexpected ingredient into a recipe — if the kitchen isn’t prepared, the entire dish could get spoiled, potentially ruining everything. This flaw can disrupt the memory handling in your devices, which is a recipe for disaster! This vulnerability involves improper memory handling when processing maliciously crafted web content, which could lead to memory corruption on affected devices. This can allow attackers to crash applications or execute arbitrary code.

What to do

An attacker could exploit this vulnerability to crash applications or even manipulate sensitive data, leading to a chaotic situation where your device might behave erratically. While it hasn't been publicly exploited yet, the potential for mischief is absolutely concerning! To secure your devices, update to Safari 26.1, iOS 18.7.2 (and higher), iPadOS 18.7.2 (and higher), macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, and watchOS 26.1. Don't wait to patch — this one's a must! You've got this! Stay informed, stay updated, and keep your devices safe! 🛡️

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01169 · 67.1th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'); CWE-787 · Out-of-bounds Write
Published
2025-11-04T07:15Z
Affected products (6)
ProductVersionsFixed in
apple/safari< 26.126.1
apple/ipados< 26.126.1
apple/iphone_os< 26.126.1
apple/tvos< 26.126.1
apple/visionos< 26.126.1
apple/watchos< 26.126.1
References (12)
EPSS history
Timeline
  • 04 NOV 01:15Z
    The issue was addressed with improved memory handling
    cvelistv5