EUVD-2026-78044
GHSA-p86j-93wf-2q76
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Local attacker-controlled app with normal privileges and no user interaction; kernel write gives integrity impact and crashes drive high availability impact.
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
Lifecycle Timeline
6DescriptionCVE.org
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination or write kernel memory.
AnalysisAI
An out-of-bounds write in the Apple macOS kernel allows a locally running application to corrupt kernel memory, potentially causing unexpected system termination or arbitrary kernel memory writes. The flaw affects macOS releases prior to Sequoia 15.8, Tahoe 26.7, and Golden Gate 27, with a CVSS base score of 6.1 (AV:L/AC:L/PR:L/UI:N) reflecting the requirement for local code execution with attacker-controlled privileges. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires local execution of attacker-controlled code on an affected macOS build (Sequoia before 15.8, Tahoe before 26.7, or Golden Gate 27 before the fix) with at least normal user privileges - the CVSS vector is AV:L/AC:L/PR:L/UI:N, so no network vector, no elevated privileges, and no user interaction beyond running the malicious app are needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals here are mixed and worth separating. … 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: macOS Sequoia 15.8, macOS Tahoe 26.7, and macOS Golden Gate 27. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
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