AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

AppleCVE-2026-84520

Apple macOS: buffer overflow

Apple

CVE-2026-84520 · Published Sep 14, 2026 · updated Sep 16, 2026

Critical9.8
Fix: upgrade to 27 or later
Apple advisory

A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Golden Gate 27. A local attacker may be able to cause unexpected system termination or corrupt kernel memory.

Affected versions

PackageAffectedFixed in
macOS
Product
< 2727
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity from
CISA (its enrichment of the CVE record)
Weakness
CWE-120

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