CVE-2026-86950

Analyzed
Published: 28 Sept 2026, 19:13
Last modified:29 Sept 2026, 14:58

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
v3.1 (cve.org)
EPSS Score
0.81% LOW
1% probability
KEV
Listed
CISA
1 listing
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Sept 2026, 19:13
Published
Vulnerability first disclosed
29 Sept 2026, 00:00
Added to CISA KEV
Apple Multiple Products Out-of-Bounds Write Vulnerability
29 Sept 2026, 14:58
Last Modified
Vulnerability information updated
02 Oct 2026, 00:00
CISA Remediation Due
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.

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.81%• Percentile: 55%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • apple•ios and ipados

    < 26.7.1

  • apple•ipados

    < 26.7.1

  • apple•iphone_os

    < 26.7.1

  • apple•macos

    < 26.7.1 | < 15.8.1 | ≥ 26.0, < 26.7.1

References (7)