CVE-2026-84520

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

Apple · macOS

CVSS v3.1 CNA

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

EPSS

0.45% chance of exploitation in the next 30 days, 37th percentile

Published

2026-09-14

Updated

2026-09-16

Proof-of-concept exploits (1)

• csrXamfi/CVE-2026-845201★ · 2026-10-10

Security advisories

• https://support.apple.com/en-us/149035

References

• CVE Record
• NVD entry

Related

• CVE-2026-65330