CVE-2026-20688 — CRITICAL (9.3)

Q: How severe is CVE-2026-20688?

CVE-2026-20688 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-20688?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Ipados, Apple Iphone Os, Apple Macos, Apple Visionos.

Vulnerability Description

A path handling issue was addressed with improved validation. This issue is fixed in iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, visionOS 26.4. An app may be able to break out of its sandbox.

CVSS Score

9.3

CRITICAL

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Apple	Ipados	< 26.4
Apple	Iphone Os	< 26.4
Apple	Macos	>= 14.0, < 14.8.5
Apple	Visionos	< 26.4

Related Weaknesses (CWE)

CWE-22

References

https://support.apple.com/en-us/126792Release NotesVendor Advisory
https://support.apple.com/en-us/126794Release NotesVendor Advisory
https://support.apple.com/en-us/126795Release NotesVendor Advisory
https://support.apple.com/en-us/126796Release NotesVendor Advisory
https://support.apple.com/en-us/126799Release NotesVendor Advisory

FAQ

What is CVE-2026-20688?

CVE-2026-20688 is a vulnerability with a CVSS score of 9.3 (CRITICAL). A path handling issue was addressed with improved validation. This issue is fixed in iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, visionOS 26.4. An app may be...

How severe is CVE-2026-20688?

CVE-2026-20688 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-20688?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Ipados, Apple Iphone Os, Apple Macos, Apple Visionos.