---
title: "CVE-2026-86919: Apple iOS & macOS - Buffer Overflow"
description: "Apple iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, and visionOS 27 contain a buffer overflow caused by insufficient input validation in Bluetooth handling, letting attackers with paired Bluetooth devices execute arbitrary code."
url: https://panop.io/threat-heartbeat/CVE-2026-86919/
---

# CVE-2026-86919 Apple iOS & macOS - Buffer Overflow

Apple iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, and visionOS 27 contain a buffer overflow caused by insufficient input validation in Bluetooth handling, letting attackers with paired Bluetooth devices execute arbitrary code.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.19% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-86919)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

20 October 2026

Updated

21 October 2026

Weakness

[CWE-121](https://cwe.mitre.org/data/definitions/121.html)

## Vendor fix

Update to iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, visionOS 27 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-86919](https://nvd.nist.gov/vuln/detail/CVE-2026-86919)
- [https://support.apple.com/en-us/149034](https://support.apple.com/en-us/149034)
- [https://support.apple.com/en-us/149035](https://support.apple.com/en-us/149035)
- [https://support.apple.com/en-us/149038](https://support.apple.com/en-us/149038)
- [https://support.apple.com/en-us/149041](https://support.apple.com/en-us/149041)
- [https://support.apple.com/en-us/149042](https://support.apple.com/en-us/149042)
- [https://support.apple.com/en-us/149043](https://support.apple.com/en-us/149043)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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