🛡️ CVE-2026-43818 — ipados

🟠 CVSS 8.8 — High ✅ No Known Exploit CWE-190 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An integer overflow was addressed with improved input validation. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Processing a maliciously crafted image may lead to arbitrary code execution.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-43818 is classified as CWE-190: Integer Overflow or Wraparound. Arithmetic produces a value too large for its type and wraps around, so a later size or bounds check passes when it should not.

Affected software

CVE-2026-43818 is recorded against 3 packages.

  • ipados (fixed in 26.6)
  • iphone-os (fixed in 26.6)
  • macos (from 26.0 up to 26.6)

Timeline and source

Published on 27 July 2026 and last revised on 29 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

support.apple.com
support.apple.com
support.apple.com
support.apple.com

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE CWE-190
Public Exploit ✅ No
Source NVD
Published 2026-07-27
Updated 2026-08-11
Modified 2026-07-29
Fix URL N/A

Affected Packages

Software From version Fixed in
ipados 26.6
iphone-os 26.6
macos 26.0 26.6

References

Release Notes, Vendor Advisory https://support.apple.com/en-us/128066
Release Notes, Vendor Advisory https://support.apple.com/en-us/128067
Release Notes, Vendor Advisory https://support.apple.com/en-us/128071
Release Notes, Vendor Advisory https://support.apple.com/en-us/128072

Similar Threats

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