CVE-2026-43656

HIGH
MEDIUM Priority: 0.02 BB Relevance: 75/100
Published: 2026-05-11 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: Low
I: Low
A: Low

Description

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. Parsing a maliciously crafted file may lead to an unexpected app termination.

Weakness Classification (1)

Affected Software (7)

VendorProductVersion
apple ipados < 18.7.9
apple ipados 26.0 – 26.5
apple iphone_os < 18.7.9
apple iphone_os 26.0 – 26.5
apple macos 14.0 – 14.8.7
apple macos 15.0 – 15.7.7
apple macos 26.0 – 26.5

References & Advisories (5)

https://support.apple.com/en-us/127110
Release Notes Vendor Advisory
https://support.apple.com/en-us/127111
Release Notes Vendor Advisory
https://support.apple.com/en-us/127115
Release Notes Vendor Advisory
https://support.apple.com/en-us/127116
Release Notes Vendor Advisory
https://support.apple.com/en-us/127117
Release Notes Vendor Advisory

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS — Exploitation Probability

0.27%
Raw Score 0.002650
Percentile 18.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00265
2026-10-28
0.00265

Intelligence Sources

nvd ref →