CVE-2024-40856

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-17 · updated 2026-06-17

Description

An integrity issue was addressed with Beacon Protection. This issue is fixed in iOS 18 and iPadOS 18, macOS Sequoia 15, tvOS 18. An attacker may be able to force a device to disconnect from a secure network.

Affected products

Apple iPadOS: before 18.0 — fixed in 18.0
Apple Iphone Os: before 18.0 — fixed in 18.0
Apple macOS: before 15.0 — fixed in 15.0

How to fix

Upgrade to a fixed version: Apple iPadOS 18.0; Apple Iphone Os 18.0; Apple macOS 15.0. Check the vendor advisory for mitigations.

References

https://support.apple.com/en-us/121238
https://support.apple.com/en-us/121248
https://support.apple.com/en-us/121250
http://seclists.org/fulldisclosure/2024/Sep/32
http://seclists.org/fulldisclosure/2024/Sep/33
http://seclists.org/fulldisclosure/2024/Sep/34

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