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CVE-2026-86950

Apple Multiple Products•HIGH · CVSS 8.8• In the wild In CISA KEV

What is CVE-2026-86950?

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, 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.

CVSS8.8 CNA/ADP score via NVD 3.1

SeverityHIGH

Exploitation In the wild In CISA KEV

EPSS26% · P98

Triage statusActive Exploit

ActionPatch immediately

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWECWE-787

NVD published2026-09-28

NVD last modified2026-10-27

Timeline

2026-09-28Published to the U.S. National Vulnerability Database (NVD)
2026-09-29First covered in a defend.network daily briefing
2026-09-29Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
2026-10-13CISA federal remediation deadline (BOD 26-04)
2026-10-27NVD record last updated

CISA Known Exploited Vulnerability

Apple Multiple Products Out-of-Bounds Write Vulnerability

Added to KEV2026-09-29

Federal patch deadline2026-10-13

Known ransomware useUnknown

Affected product

Apple Multiple Products

NVD also lists CPE entries for: Apple Ipados, Apple Iphone Os, Apple Macos

Remediation Steps

Apply the vendor security update for Apple Multiple Products as a priority.
Restrict network exposure of the affected service to trusted sources until patched.
Review logs and detections for indicators of exploitation.
Confirm fixed versions against the official vendor advisory before deploying.

References

Referenced in our briefings & reports

Vulnerability Priority Report – Week 4 of October 2026 (October 26 – November 1)
Vulnerability Priority Report – Week 3 of October 2026 (October 19 – 25)
Vulnerability Priority Report – Week 2 of October 2026 (October 12 – 18)
Vulnerability Priority Report – Week 1 of October 2026 (October 5 – 11)
Vulnerability Priority Report – Week 4 of September 2026 (September 28 – October 4)
Apple CoreGraphics exploited; PHP RCE hits 70% of sites; HPE critical patches (2026-10-28)
Apple zero-day, Microsoft mega-patch (974 CVEs), ShinyHunters Oracle escalation (2026-09-29)

Related vulnerabilities

CVE-2024-27834 – Apple Multiple Products (same product)
CVE-2026-65400 – Apple MacOS (same product)
CVE-2026-107441 (same weakness: CWE-787)
CVE-2026-87491 – Google Chromium V8 (same weakness: CWE-787)
CVE-2026-44747 (same weakness: CWE-787)
CVE-2026-53362 – Linux Kernel (same weakness: CWE-787)

Apple: 96 known exploited vulnerabilities (CISA KEV) →

Browse all tracked CVEs in the defend.network CVE database →

🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.