EUVD-2026-78042
GHSA-wq87-x384-6wm9
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local vector requiring existing user-level code execution so PR:L, but AC:L and no user interaction once the app runs; total C/I/A impact.
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
Lifecycle Timeline
7DescriptionCVE.org
This issue was addressed with additional entitlement checks. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to gain root privileges.
AnalysisAI
Apple macOS contains a local privilege-escalation flaw in which an application running on the system can escalate to root because entitlement checks were insufficient. Apple addressed the issue with additional entitlement validation, fixing it in macOS Sequoia 15.8, macOS Tahoe 26.7, and macOS Golden Gate 27; earlier releases (pre-15.8, pre-26.7) remain vulnerable. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires the ability to execute an application locally on a vulnerable macOS build (pre-15.8, pre-26.7) as a logged-in, non-privileged user - CVSS PR:L with AV:L confirms the attacker must already have code running in a user session and does not need root or admin rights beforehand. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals here are mixed and should be read carefully. … 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 | Apply Apple's fix by upgrading to macOS Sequoia 15.8, macOS Tahoe 26.7, or macOS Golden Gate 27 (whichever branch the fleet standardizes on) - the vendor-released patch is available and documented in Apple advisories https://support.apple.com/en-us/149035, https://support.apple.com/en-us/149042, and https://support.apple.com/en-us/149043. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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