Live › vulnerability › CVE-2026-86871
Go to dashboardAn integer underflow in macOS input handling can be triggered by a network file server an attacker controls. The result is an unexpected system termination, a crash rather than code execution.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Macs that mount or connect to network file servers, where a server could be controlled by an attacker. Machines that never connect to untrusted file servers face less exposure. unknown for any further detail the sources do not give.
No product ranges from the sources yet.
sw_vers -productVersion and compare it with the fixed releases.27 (Golden Gate), 15.8 (Sequoia) or 26.7 (Tahoe), or later, as listed in the advisory.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
This page as .md · .json · in your agent: get_signal("CVE-2026-86871")
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