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.
History

Sun, 20 Sep 2026 20:15:00 +0000

Type Values Removed Values Added
Title Certificate Validation Flaw Allowing TLS Interception by Privileged Network Attacker

Wed, 16 Sep 2026 09:45:00 +0000

Type Values Removed Values Added
Title Certificate Validation Issue Allows Traffic Interception in macOS

Wed, 16 Sep 2026 01:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

Tue, 15 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 15 Sep 2026 08:30:00 +0000

Type Values Removed Values Added
Title Certificate Validation Issue Allows Traffic Interception in macOS
Weaknesses CWE-295

Tue, 15 Sep 2026 03:30:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple macos
Vendors & Products Apple
Apple macos

Mon, 14 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
Description 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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published: 2026-09-14T20:50:30.682Z

Updated: 2026-10-20T00:50:47.239Z

Reserved: 2026-09-08T16:43:41.872Z

Link: CVE-2026-86889

cve-icon Vulnrichment

Updated: 2026-09-15T15:23:29.755Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-14T21:17:39.860

Modified: 2026-09-16T01:03:23.290

Link: CVE-2026-86889

cve-icon Redhat

No data.