A certificate validation issue was addressed with improved certificate validation. (CVE-2026-86889)
A certificate validation issue in macOS was addressed by improving certificate validation. The vulnerability could allow an attacker in a privileged network position to intercept network traffic. The issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
AI Analysis
Technical Summary
CVE-2026-86889 describes a certificate validation vulnerability in macOS that could be exploited by an attacker positioned within the network to intercept traffic. The issue has been resolved by enhancing the certificate validation process. The fix is included in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
Potential Impact
An attacker with privileged network access may be able to intercept network traffic due to improper certificate validation. This could lead to potential man-in-the-middle attacks or data interception.
Mitigation Recommendations
Apply the official fixes by upgrading to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7. These versions include the improved certificate validation that addresses this vulnerability.
A certificate validation issue was addressed with improved certificate validation. (CVE-2026-86889)
Description
A certificate validation issue in macOS was addressed by improving certificate validation. The vulnerability could allow an attacker in a privileged network position to intercept network traffic. The issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86889 describes a certificate validation vulnerability in macOS that could be exploited by an attacker positioned within the network to intercept traffic. The issue has been resolved by enhancing the certificate validation process. The fix is included in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
Potential Impact
An attacker with privileged network access may be able to intercept network traffic due to improper certificate validation. This could lead to potential man-in-the-middle attacks or data interception.
Mitigation Recommendations
Apply the official fixes by upgrading to macOS Golden Gate 27, macOS Sequoia 15.8, or macOS Tahoe 26.7. These versions include the improved certificate validation that addresses this vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-6fvx-gp4r-8x93
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-86889"]
- State
- PUBLISHED
Threat ID: 6aa8a18655bf5e2cf5f3d3a5
Added to database: 09/15/2026, 01:38:14 UTC
Last enriched: 09/15/2026, 01:45:42 UTC
Last updated: 09/15/2026, 03:01:22 UTC
Views: 2
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