CVE-2026-86950 KEV
8.8
HIGH · CVSS 3.1 · EPSS 1.2% (pctl 68)
Patch first
On CISA KEV — known exploited in the wild, due 2026-10-02.
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.
Scoring
| CVSS | 8.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 1.24% — more likely to be exploited than 68% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | yes — remediate by 2026-10-02 |
| Public exploit | none known |
| Published | 2026-09-28 |
| Last modified | 2026-09-30 |
CISA KEV
| Name | Apple Multiple Products Out-of-Bounds Write Vulnerability |
|---|---|
| Added | 2026-09-29 |
| Due | 2026-10-02 |
| Vendor / product | Apple / Multiple Products |
| Ransomware use | none reported |
Affected (3)
| Vendor | Product |
|---|---|
| apple | ipados |
| apple | iphone os |
| apple | macos |
References
- https://support.apple.com/en-us/149226
- https://support.apple.com/en-us/149228
- https://support.apple.com/en-us/149229
- http://seclists.org/fulldisclosure/2026/Sep/89
- http://seclists.org/fulldisclosure/2026/Sep/90
- http://seclists.org/fulldisclosure/2026/Sep/91
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86950
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