HIGH CISA KEV

CVE-2026-86950

CVSS v3

8.8

HIGH

EPSS Score

0.8 %

exploit probability, as of 2026-09-29

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

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.

CISA Known Exploited Vulnerability

Date Added: 2026-09-29
Patch Due Date: 2026-10-02
Ransomware Use: Unknown

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2026-09-28
Last Modified: 2026-09-29
CERT-FR Advisory: CERTFR-2026-AVI-1236
CERT-FR Link: CERTFR-2026-AVI-1236

Frequently asked questions

What is CVE-2026-86950?

Is CVE-2026-86950 actively exploited?

Yes. CVE-2026-86950 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-10-02.

What is the CVSS score for CVE-2026-86950?

CVE-2026-86950 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Is CVE-2026-86950 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

Check an IP Search CVEs SIEM & TIP integrations

No credit card required · 500 free checks/month · Free API key

Go further

For a threat intelligence platform: malware, C2 and ransomware indicators over STIX/TAXII.

Other 2026 vulnerabilities worth triaging

Ranked by exploit probability (EPSS).

Back to CVE Database