[ CVE-2026-86871 · Published 20 Oct 2026 ]
Vulnerability in Apple macOS
CVSS 5.9
EPSS <1%No fix listed yet
[ Description ]Official description
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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.