EUVD-2026-77975
GHSA-8qm4-6r58-2hrp
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Local malicious sandboxed app (AV:L, UI:R) with no prior privileges (PR:N) reads System Keychain secrets, so C:H but no integrity or availability impact.
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
Lifecycle Timeline
6DescriptionCVE.org
An authorization issue was addressed with improved state management. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. A sandboxed app may be able to access the System Keychain.
AnalysisAI
A sandboxed application running on Apple iOS/iPadOS, macOS Golden Gate, tvOS, visionOS, or watchOS can bypass authorization checks and read contents of the System Keychain, exposing stored secrets such as credentials, certificates, and tokens. The flaw stems from incorrect authorization combined with faulty state management (CWE-863) and affects all versions prior to the 27 release train; the platform owner has shipped fixes in iOS 27, iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, and watchOS 27. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a sandboxed application to already be running locally on the affected Apple OS (AV:L); the attacker must get the user to install/run that app (UI:R). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but locally-scoped access-control flaw (CWE-863) rather than a remote-critical issue. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, and watchOS 27 - update every affected device to these releases or later, using Settings > General > Software Update on iOS/iPadOS/tvOS/watchOS and System Settings > General > Software Update on macOS, or push the updates through MDM/Apple Business Manager for managed fleets, and reference the Apple advisories at https://support.apple.com/en-us/149034 through https://support.apple.com/en-us/149035, 149036, 149037, and 149038 for the per-platform detail. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-863 – Incorrect Authorization
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
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