CVE-2026-20683

Unauthorized account access via authentication state mishandling

Published Sep 14, 2026 · Updated Sep 14, 2026

Authentication bypass in Apple iOS, iPadOS, macOS, and visionOS allows apps to access a user’s Apple Account through Sign in with Apple. Apple attributes the flaw to state management in the authentication flow but has not disclosed the affected component or incorrect state transition. Exploitation requires an app to invoke that flow; the published record confirms account access but does not specify which account data or actions become available.

CVSS severityUnavailable
Unscored
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Apple iOS, iPadOS, macOS, and visionOS allows apps to access a user’s Apple Account through Sign in with Apple. Apple attributes the flaw to state management in the authentication flow but has not disclosed the affected component or incorrect state transition. Exploitation requires an app to invoke that flow; the published record confirms account access but does not specify which account data or actions become available.

The record

CVE
CVE-2026-20683
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <27

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Apple · iOS and iPadOSversion=0 <27
Apple · visionOSversion=0 <27
Apple · macOSversion=0 <15.8; version=0 <26.7; version=0 <27

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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