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Vulnerability Intelligence

CVE-2026-86950

HighExploitedPublic exploit

An out-of-bounds write issue was addressed with improved bounds checking.

Published Sep 28, 2026 · Updated Oct 1, 2026 · Also known as EUVD-2026-88445, GHSA-3cf3-h799-fjvq

Key Facts

Patch immediately
  • CVE-2026-86950 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Ipados (Apple), Iphone OS (Apple), macOS (Apple) and 1 more product.
  • It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 28, 2026. Public exploit code is available.
  • EPSS estimates a 1.2% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Ipados 26.7.1, Iphone OS 26.7.1, macOS 15.8.1.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

8.8

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

EPSS (30-day exploit likelihood)

1.2%

Higher than 68.7% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2026-86950 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
CISA KEVSep 29, 2026Oct 13, 2026Not reported
Industry KEV feedSep 28, 2026Oct 13, 2026Not reported
CIRCL KEVSep 28, 2026Oct 2, 2026Not reported
ENISA EUVDSep 29, 2026n/aNot reported

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 evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Affected Products

7 affected entries in total
ProductAffected versionsFixed in
IpadosAppleSee advisory26.7.1
Iphone OSAppleSee advisory26.7.1
macOSAppleSee advisory15.8.1
iOS and iPadOSSee advisory26.7.1

Patched Releases

Ipados

26.7.1

Iphone OS

26.7.1

macOS

15.8.1, 26.7.1

iOS and iPadOS

26.7.1

Timeline

  1. Publicly disclosed

    Sep 28, 2026

  2. Added to Industry KEV feed

    Sep 28, 2026

  3. Added to CIRCL KEV

    Sep 28, 2026

  4. Added to CISA KEV

    Sep 29, 2026

  5. Added to ENISA EUVD

    Sep 29, 2026

  6. Last updated

    Oct 1, 2026

Weakness Type

  • CWE-787 Out-of-bounds Write

References

4 more references in the full CVE brief

FAQ

Common Questions.

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