CVE-2025-43431

The issue was addressed with improved memory handling

High · published November 4, 2025

CVSS v3.1
8.8
EPSS
1%
Percentile
57.9
In the wild
Unconfirmed
What it is

⚡ Maliciously crafted web content could lead to memory corruption in Safari and iOS apps! This high-severity bug is a developer's worst nightmare. 🔥 Think of it like a restaurant where a rogue chef serves food with hidden allergens—one bite could cause chaos in the kitchen, disrupting the entire operation! An attacker could exploit this vulnerability to corrupt memory, potentially causing crashes or unpredictable behavior in affected applications. This could compromise user experience and even lead to data leakage or unauthorized access, putting users at serious risk!

Put simply

Think of it like a restaurant where a rogue chef serves food with hidden allergens—one bite could cause chaos in the kitchen, disrupting the entire operation! This vulnerability arises from improper memory handling, allowing attackers to execute malicious code by processing specially crafted web content. It affects various versions of Safari, iOS, and macOS, indicating a widespread issue.

What to do

An attacker could exploit this vulnerability to corrupt memory, potentially causing crashes or unpredictable behavior in affected applications. This could compromise user experience and even lead to data leakage or unauthorized access, putting users at serious risk! Update to Safari 26.1, iOS 18.7.2, iPadOS 18.7.2, macOS Tahoe 26.1, and other relevant versions immediately. Ensure that users are prompted to update their devices to prevent potential exploitation. 🛡️ You've got this! With a quick update, you'll safeguard your users and keep that kitchen running smoothly! 🚀

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
0.00855 · 57.9th percentile
Published
2025-11-04T01:17Z
EPSS history
Timeline
  • 04 NOV 01:17Z
    The issue was addressed with improved memory handling
    cvelistv5