CVE-2026-43776CWE-120

CVE-2026-43776

High · published July 28, 2026

CVSS v3.1

7.8

EPSS

Percentile

8.6

In the wild

Unconfirmed

What it is

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.

The record

Technical detail

CVSS v3.1: 7.8 · HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0: Not supplied
EPSS: 0.00194 · 8.6th percentile
Weakness: CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published: 2026-07-28T01:17Z

Affected products (4)

Product	Versions	Fixed in
apple/ipados	< 26.6	26.6
apple/iphone_os	< 26.6	26.6
apple/macos	≥ 15.0, < 15.7.8	15.7.8
apple/macos	≥ 26.0, < 26.6	26.6

References (4)

https://support.apple.com/en-us/128066 · [email protected]https://support.apple.com/en-us/128067 · [email protected]https://support.apple.com/en-us/128071 · [email protected]https://support.apple.com/en-us/148287 · [email protected]

EPSS history

Timeline

27 JUL 20:14Z
A buffer overflow was addressed with improved bounds checking
cvelistv5