Live › vulnerability › CVE-2026-86981
Go to dashboardAn out-of-bounds write flaw in macOS allows a malicious app to cause an unexpected system termination. Apple fixed it with improved bounds checking in macOS Sequoia 15.8 and macOS Tahoe 26.7.
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.
Any Mac running macOS Sequoia before 15.8 or macOS Tahoe before 26.7 is exposed, since the flaw sits in the operating system and an app can trigger it. The sources do not name a specific configuration or role that narrows exposure. Machines already on the fixed releases can skip it.
No product ranges from the sources yet.
sw_vers -productVersion on each Mac and compare against 15.8 (Sequoia) or 26.7 (Tahoe)15.8 or later26.7 or laterEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to cause unexpected system termination.
This page as .md · .json · in your agent: get_signal("CVE-2026-86981")
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