---
title: "CVE-2026-20683: Apple - Authentication Bypass"
description: "Apple iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, and visionOS 27 contain an authentication bypass caused by improper state management in the Sign In With Apple flow, letting apps access user Apple Accounts, exploit requires app to use the Sign In With Apple authentication flow."
url: https://panop.io/threat-heartbeat/CVE-2026-20683/
---

# CVE-2026-20683 Apple - Authentication Bypass

Apple iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, and visionOS 27 contain an authentication bypass caused by improper state management in the Sign In With Apple flow, letting apps access user Apple Accounts, exploit requires app to use the Sign In With Apple authentication flow.

CVSS base score 7.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.19% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-20683)

## Details

Type

Authentication Bypass

Impact

Broken Authentication

CVSS vector

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

Published

14 September 2026

Updated

15 October 2026

Weakness

[CWE-287](https://cwe.mitre.org/data/definitions/287.html)

## Vendor fix

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

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-2026-20683](https://nvd.nist.gov/vuln/detail/CVE-2026-20683)
- [https://support.apple.com/en-us/149043](https://support.apple.com/en-us/149043)
- [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/149042](https://support.apple.com/en-us/149042)

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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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