PT-2026-117963

CVE-2026-86871

Published

2026-09-14

Updated

2026-10-20

Description by

CVSS 3.1

5.9

Medium

MetricsAV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions macOS versions prior to Golden Gate 27 macOS versions prior to Sequoia 15.8 macOS versions prior to Tahoe 26.7

Description An integer underflow occurs due to insufficient input validation. An attacker who controls a network file server can exploit this to cause unexpected system termination.

Recommendations Update to macOS Golden Gate 27. Update to macOS Sequoia 15.8. Update to macOS Tahoe 26.7.

Exploitability

Fix

Impacts

Researchers

Ashish Kunwar

Cem Onat Karagun

John Lussier

Vendors

Affected products

Weakness enumeration

CWE-190: Integer Overflow or Wraparound