What is CVE-2026-86919?

CVE-2026-86919 is a high-severity vulnerability in Apple iOS And Ipados, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-10-20.

How severe is CVE-2026-86919?

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

Buffer overflow in Apple iOS And Ipados

CVE-2026-86919

A stack overflow was addressed with improved input validation. 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, visionOS 27. An attacker with a paired Bluetooth device may be able to execute arbitrary code.

Vulnerability class: Buffer Overflow

Published 2026-10-20 · last modified 2026-10-20.

CVSS v3 metric

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

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

Frequently asked questions

What is CVE-2026-86919?: CVE-2026-86919 is a high-severity vulnerability in Apple iOS And Ipados, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-10-20.
How severe is CVE-2026-86919?: High severity. CVSS v3 base score is 8.8 out of 10.