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CVE-2026-86950

Apple Multiple Products Out-of-Bounds Write Vulnerability

Apple · Multiple Products · Added to KEV: 2026-09-29 · Snapshot: 2026-10-18T20:43:22.315380+00:00

CVSS base severity8.8HIGH · cvssMetricV31
EPSS probability1.24%Percentile: 68.72% · 2026-10-18
CISA KEVKnown exploitedKEV is a global exploitation signal, not an asset scan

Technical context

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously crafted file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27.

Action and remediation

Review the vendor advisory, determine affected versions, apply the vendor-supported fix or mitigation, and validate the change.

Check vendor advisories and affected-version data before remediation. Validate affected software, identify internet reachability and business criticality in your authorised environment, and confirm mitigating controls. No AI-generated fix is asserted as vendor guidance.

Evidence links

Exposure and confidence limitations

Shodan identifies observable services but does not independently prove exploitation or confirm every affected software version. CyberIntel does not join this CVE to arbitrary public host IPs. No Tenable VPR or Qualys TruRisk score is calculated or implied.