CVE-2026-86950

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-86950
StatePUBLISHED
Assignerapple
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-28 20:17:11 UTC
Updated2026-10-27 12:29:30 UTC
DescriptionAn 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from ADP

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

EPSS: 0.261660000 probability, percentile 0.979840000 (date 2026-10-27)

CISA KEV: Listed on 2026-09-29; due 2026-10-13; ransomware use Unknown

Problem Types: CWE-787 | 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. | CWE-787 CWE-787 Out-of-bounds Write

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CISA Known Exploited Vulnerability

VendorApple
ProductMultiple Products
NameApple Multiple Products Out-of-Bounds Write Vulnerability
Required ActionApply 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.
Noteshttps://support.apple.com/en-us/149226 ; https://support.apple.com/en-us/149228 ; https://support.apple.com/en-us/149229 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-86950

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Apple Ipados All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apple IOS And IPadOS affected 18.7.11 custom Not specified
CNA Apple IOS And IPadOS affected 26.7.1 custom Not specified
CNA Apple MacOS affected 15.8.1 custom Not specified
CNA Apple MacOS affected 26.7.1 custom Not specified

References

ReferenceSourceLinkTags
support.apple.com/en-us/149225 [email protected] support.apple.com Release Notes, Vendor Advisory
seclists.org/fulldisclosure/2026/Sep/89 af854a3a-2127-422b-91ae-364da2661108 seclists.org Mailing List, Third Party Advisory
support.apple.com/en-us/149228 [email protected] support.apple.com Release Notes, Vendor Advisory
seclists.org/fulldisclosure/2026/Sep/90 af854a3a-2127-422b-91ae-364da2661108 seclists.org Mailing List, Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
support.apple.com/en-us/149226 [email protected] support.apple.com Release Notes, Vendor Advisory
seclists.org/fulldisclosure/2026/Sep/91 af854a3a-2127-422b-91ae-364da2661108 seclists.org Mailing List, Third Party Advisory
support.apple.com/en-us/149229 [email protected] support.apple.com Release Notes, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

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