What is CVE-2026-86891?

CVE-2026-86891 is a low-severity vulnerability in Apple macOS, classified under Improper Authorization. CVSS score: 3.5/10. Published 2026-09-14.

How severe is CVE-2026-86891?

Low severity. CVSS v3 base score is 3.5 out of 10.

Auth bypass in Apple macOS

CVE-2026-86891

An authorization issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, watchOS 27. An app may be able to access Bluetooth device information.

Published 2026-09-14 · last modified 2026-09-18.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (13.6th percentile), scored 2026-10-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

support.apple.com/en-us/149035 (Vendor Advisory)
support.apple.com/en-us/149037 (Vendor Advisory)
support.apple.com/en-us/149042 (Vendor Advisory)
support.apple.com/en-us/149043 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-86891?: CVE-2026-86891 is a low-severity vulnerability in Apple macOS, classified under Improper Authorization. CVSS score: 3.5/10. Published 2026-09-14.
How severe is CVE-2026-86891?: Low severity. CVSS v3 base score is 3.5 out of 10.