AI and data stack advisories

Severe, 6 weeks1490Projects326

1490 severe, 6 weeks · 326 projects

AppleCVE-2026-86871

Apple macOS: integer overflow

Apple

CVE-2026-86871 · Published Oct 20, 2026 · updated Nov 3, 2026

Medium5.9
Fix: upgrade to 15.8 or later (3 fixed versions below)
Apple advisory

An integer underflow was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker with control of a network file server may be able to cause unexpected system termination.

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:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity from
CISA (its enrichment of the CVE record)
Weakness
CWE-20, CWE-190

More Apple advisories

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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 iOS and iPadOS: improper authorizationCVE-2026-86976fixed in 27 +1Medium 5.9Oct 20Apple iOS and iPadOS: denial of serviceCVE-2026-86963fixed in 26.7 +1Medium 4.3Oct 20Apple iOS and iPadOS: out-of-bounds readCVE-2026-86975fixed in 27 +2