What is CVE-2026-43818?

CVE-2026-43818 is a high-severity vulnerability in Apple Ios And Ipados, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2026-07-27.

How severe is CVE-2026-43818?

High severity. CVSS v3 base score is 8.8 out of 10.

Integer overflow in Apple Ios And Ipados

CVE-2026-43818

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 co…

Vulnerability class: Integer Overflow

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

product-security@apple.com (Release Notes, Vendor Advisory)
product-security@apple.com (Release Notes, Vendor Advisory)
product-security@apple.com (Release Notes, Vendor Advisory)
product-security@apple.com (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-43818?: CVE-2026-43818 is a high-severity vulnerability in Apple Ios And Ipados, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2026-07-27.
How severe is CVE-2026-43818?: High severity. CVSS v3 base score is 8.8 out of 10.