CVE-2026-86889CWE-295

CVE-2026-86889

Medium · published September 15, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
8.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00197 · 8.9th percentile
Weakness
CWE-295 · Improper Certificate Validation
Published
2026-09-15T01:17Z
Affected products (2)
ProductVersionsFixed in
apple/macos≥ 15.0, < 15.815.8
apple/macos≥ 26.0, < 26.726.7
References (3)
https://support.apple.com/en-us/149035 · [email protected]https://support.apple.com/en-us/149042 · [email protected]https://support.apple.com/en-us/149043 · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 14 SEP 20:50Z
    A certificate validation issue was addressed with improved certificate validation
    cvelistv5