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Known exploited vulnerability

CVE-2026-86950

highCVSS 3.1 8.8In CISA KEVEPSS 26%Published · Apple

The short answer

CVE-2026-86950 affects Apple iOS and iPadOS and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-09-29: attackers are using it, so patch it first.

What it is

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.

Weakness: CWE-787.

Severity

8.8 high

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

Exploited (CISA KEV)

Yes, since Sep 29, 2026

Federal due date Oct 13, 2026

EPSS, next 30 days

26%

Higher than 98% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

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…

Affected products

iOS and iPadOS, macOS. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2026-86950 being exploited?

Yes. CISA added CVE-2026-86950 to its Known Exploited Vulnerabilities catalog on 2026-09-29, with a federal remediation due date of 2026-10-13.

How do I fix CVE-2026-86950?

CISA's required action: 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…

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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