AI and data stack advisories

Severe, 6 weeks977Projects326

977 severe, 6 weeks · 326 projects

AppleCVE-2026-86868

Apple macOS: improper authentication

Apple

CVE-2026-86868 · Published Oct 20, 2026 · updated Oct 29, 2026

Critical9.1
Fix: upgrade to 15.8 or later (3 fixed versions below)
Apple advisory

An authentication issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker may be able to impersonate other users.

Affected versions

PackageAffectedFixed in
macOS
Product
< 15.815.8
< 26.726.7
< 2727
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity from
CISA (its enrichment of the CVE record)
Weakness
CWE-287

More Apple advisories

All Apple
High 7.5Oct 20Apple iOS and iPadOS: improper authorizationCVE-2026-86977fixed in 27Medium 5.5Oct 20Apple macOS: information disclosureCVE-2026-86979fixed in 27Medium 5.5Oct 20Apple macOS: out-of-bounds writeCVE-2026-86981fixed in 15.8 +1Medium 5.5Oct 20Apple macOS: information disclosureCVE-2026-86940fixed in 27Medium 5.5Oct 20Apple iOS and iPadOS: out-of-bounds writeCVE-2026-86944fixed in 26.7 +2High 8.8Oct 20Apple Xcode: untrusted functionality includedCVE-2026-86948fixed in 27