SECURELYN
Free ScanFree consultation

CVE-2026-86950

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.

Scores

8.8
CVSS 8.8 out of 10, high severity.
1.2%
EPSS 1.2% chance of exploitation in the next 30 days.

The facts

Published
28 September 2026
Last changed
1 October 2026
NVD status
Analyzed
Severity
High, CVSS 8.8 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
Affects
  • apple ipados
  • apple iphone os
  • apple macos
Known exploited
Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 29 September 2026.
EPSS
1.2% chance of exploitation activity in the next 30 days (percentile 69).

Is there a Securelyn advisory?

Not yet. Securelyn writes plain-English advisories for the flaws that matter most to businesses. Subscribe to the digest to hear about them.

References