CVE-2026-86950

CoreGraphics: 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.

CVE-2026-86950 is fixed in 2 products on 1 platform, first by Sequoia 15.8.1, released September 28, 2026. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on September 29, 2026. Patch Radar priority: Patch now.

Patch nowCISA KEV

CVSS

8.8

HIGH

Exploitation

Exploited

Reported by the vendor

CISA KEV

Sep 29, 2026

Federal due date Oct 13, 2026

EPSS

0.2617

98th percentile

An out-of-bounds write issue was addressed with improved bounds checking.

Where it's fixed

Product	Fixed in	Fix	Released
macOS
Sequoia	15.8.1	Sequoia 15.8.1	Sep 28, 2026
Tahoe	26.7.1	Tahoe 26.7.1	Sep 28, 2026

Details

Published
September 28, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Vendor advisory
https://support.apple.com/en-us/149228

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