CVE-2026-84609

What it is

A permissions issue was addressed with improved path validation. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An app may be able to modify protected system files.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.7% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-09-14 21:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-09-18 12:52 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.7% in the next 30 days (EPSS).
• Severity: 9.8 CRITICAL (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2026-09-14 21:17 UTC

Last modified

2026-09-18 12:52 UTC

Exploit probability

0.7% · EPSS, next 30 days

Weakness

CWE-120 · Classic buffer overflow

Record status

Analyzed

Affected

• Apple Ipados < 27.0
• Apple Iphone Os < 27.0
• Apple macOS < 15.8
• Apple macOS < 26.7
• Apple Tvos < 27.0
• Apple Visionos < 27.0
• Apple Watchos < 27.0

Attack profile CVSS 3.1 · 9.8

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

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