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CVE-2026-86950

High8.8CISA KEV — exploited in the wild

Apple Multiple Products Out-of-Bounds Write Vulnerabilityname from CISA KEV

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.

CVSS
8.8v3.1
EPSS (exploit probability)
26.2%98th pct
CISA KEV
Listed

EPSS trendFIRST daily scores, last 90 days

FIRST EPSS rose from 0.8% on 2026-09-29 to 26.2% on 2026-10-26, ranging 0.8%–26.2% across 28 daily scores.
2026-09-29 → 2026-10-26 · 28 days · 0.8%–26.2%
Daily values
FIRST EPSS daily scores for this CVE
Score dateEPSSPercentile
2026-10-2626.2%98.0%
2026-10-2526.2%98.0%
2026-10-241.2%69.0%
2026-10-231.2%69.0%
2026-10-221.2%69.0%
2026-10-211.2%68.9%
2026-10-201.2%68.8%
2026-10-191.2%68.8%
2026-10-181.2%68.7%
2026-10-171.2%68.7%
2026-10-161.2%68.7%
2026-10-151.2%68.7%
2026-10-141.2%68.6%
2026-10-131.2%68.4%
2026-10-121.2%68.4%
2026-10-111.2%68.4%
2026-10-101.2%68.3%
2026-10-091.2%68.3%
2026-10-081.2%68.3%
2026-10-071.2%68.3%
2026-10-061.2%68.2%
2026-10-051.2%68.2%
2026-10-041.2%68.2%
2026-10-031.2%68.2%
2026-10-021.2%68.1%
2026-10-011.2%68.1%
2026-09-301.2%68.1%
2026-09-290.8%55.3%

CISA KEV entrycatalogue 2026.10.26

Date added
2026-09-29
Federal due date
2026-10-13
Known ransomware use
Unknown

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.

Verbatim from the CISA KEV catalogue (CISA KEV, fetched 2026-10-27 05:11 UTC). The due date applies to US federal agencies under BOD 22-01.

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

Affected products

  • apple ipados
  • apple iphone os
  • apple macos

Coverage1 article

References

Facts sourced from NVD, FIRST EPSS, and CISA KEV. Last synced 2026-10-27 05:11 UTC.

  • CVSS & description: NVD 2.0, fetched 2026-10-27 03:13 UTC
  • EPSS: FIRST EPSS, fetched 2026-10-27 05:11 UTC; score date 2026-10-26
  • KEV: CISA KEV, fetched 2026-10-27 05:11 UTC