CVE-2025-43400

MEDIUM

watchOS <26.1 - Memory Corruption

Title source: llm

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.1 and iPadOS 18.7.1, iOS 26.0.1 and iPadOS 26.0.1, macOS Sequoia 15.7.1, macOS Sonoma 14.8.1, macOS Tahoe 26.0.1, tvOS 26.1, visionOS 26.0.1, watchOS 26.1. Processing a maliciously crafted font may lead to unexpected app termination or corrupt process memory.

Exploits (1)

nomisec WRITEUP 5 stars
by csrXamfi · poc
https://github.com/csrXamfi/CVE-2025-43400

References (11)

Scores

CVSS v3 6.3
EPSS 0.0017
EPSS Percentile 38.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Details

CWE
CWE-787
Status published
Products (15)
Apple/iOS and iPadOS < 18.7.1
Apple/iOS and iPadOS < 26.0.1
apple/ipados 26.0
apple/ipados < 18.7.1
apple/iphone_os 26.0
apple/iphone_os < 18.7.1
apple/macos 26.0
Apple/macOS < 14.8.1
Apple/macOS < 15.7.1
Apple/macOS < 26.0.1
... and 5 more
Published Sep 29, 2025
Tracked Since Feb 18, 2026