EUVD-2026-65741
GHSA-4pgp-p442-544g
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Scope changes from app to kernel (S:C) due to kernel memory write; integrity impact is high given arbitrary kernel memory corruption; AV:L/PR:L confirmed by local app execution requirement.
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
5DescriptionCVE.org
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.7, macOS Sonoma 14.8.7. An app may be able to cause unexpected system termination or write kernel memory.
AnalysisAI
Buffer overflow in Apple macOS allows a locally-running app with standard user privileges to cause unexpected system termination or write arbitrary data into kernel memory. Affected versions include macOS Sequoia before 15.7.7 and macOS Sonoma before 14.8.7. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local code execution on the target macOS system as a low-privileged (standard) user; this is confirmed by CVSS AV:L/PR:L. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD CVSS 3.1 score of 5.5 (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) captures only the availability dimension, but the description explicitly states an app 'may be able to write kernel memory,' which implies an integrity impact not reflected in the official vector - this is a notable discrepancy worth flagging to defenders. … 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 | The primary remediation is upgrading to macOS Sequoia 15.7.7 or macOS Sonoma 14.8.7, which Apple has released to address this issue per vendor advisory at https://support.apple.com/en-us/127116 and https://support.apple.com/en-us/127117. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-120 – Classic Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today