CVE-2026-86889
A certificate validation issue was addressed with improved certificate validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker in a privileged network position may be able to intercept network traffic.
- Published Sep 14, 2026
- CVSS 4.8 medium
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available