CVE-2026-65396

5.5 MEDIUM 0.2% exploit odds Fix listed Memory safety OS & kernel

What it is

A buffer overflow was addressed with improved size validation. 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.

At a glance

Exploitability: Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
Exploit odds: 0.2% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-10-20 01:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-11-03 21:15 UTC Last updatedMost recent change to the record

Details

Published: 2026-10-20 01:17 UTC
Last modified: 2026-11-03 21:15 UTC
Exploit probability: 0.2% · EPSS, next 30 days
Weakness: CWE-119 · Buffer errors
Record status: Analyzed

Affected

Apple macOS < 15.8
Apple macOS < 26.7

Attack profile CVSS 3.1 · 5.5

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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Fix and advisories

References

NVD record · CVE.org record