CVE-2026-84543

HIGH | Platform: macOS | Changelog

CVE Details

Description

An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may cause unexpected system termination or corrupt kernel memory.

CVSS 3.1 Score

Metric	Value
Base Score	7.5 (HIGH)
Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`

Weakness

CWE-125

References

Apple Security Advisory
NVD Entry
https://support.apple.com/en-us/149035 (Release Notes, Vendor Advisory)
https://support.apple.com/en-us/149043 (Release Notes, Vendor Advisory)