CVE-2026-84543
HIGH 7.5EPSS 0.4%
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.
- Affected
- Apple · macOS
- CVSS v3.1 CNA
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - EPSS
- 0.43% chance of exploitation in the next 30 days, 36th percentile
- Published
- 2026-09-14
- Updated
- 2026-09-15
Proof-of-concept exploits (1)
- petermalone/CVE-2026-8454340★ · 2026-09-24
Security advisories
- https://support.apple.com/en-us/149035
- https://support.apple.com/en-us/149042
- https://support.apple.com/en-us/149043