What is CVE-2026-43686?

CVE-2026-43686 is a high-severity vulnerability in Apple iOS And Ipados, classified under Use After Free. CVSS score: 8.8/10. Published 2026-09-14.

How severe is CVE-2026-43686?

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

Use After Free in Apple iOS And Ipados

CVE-2026-43686

A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. Connecting to a malicious NFS server may lead to kernel memory corruption.

Vulnerability class: Use-After-Free

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

Apple Ios And Ipados
Apple Macos
Apple Tvos
Apple Visionos
Apple Watchos

Weakness classification (CWE)

CWE-416 — Use After Free

References

product-security@apple.com
product-security@apple.com
product-security@apple.com
product-security@apple.com
product-security@apple.com
product-security@apple.com
product-security@apple.com
product-security@apple.com

Frequently asked questions

What is CVE-2026-43686?: CVE-2026-43686 is a high-severity vulnerability in Apple iOS And Ipados, classified under Use After Free. CVSS score: 8.8/10. Published 2026-09-14.
How severe is CVE-2026-43686?: High severity. CVSS v3 base score is 8.8 out of 10.