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CVE-2026-86959

MEDIUM
4.3
CVSS Score
Published: October 20, 2026 at 12:50 AM UTC
Updated: October 30, 2026 at 08:17 PM UTC
2 products affected across 1 vendormacOSiPadOS

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

An input validation issue was addressed with improved input validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Processing a maliciously crafted image may lead to unexpected process termination.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS· Apple
90%
All versions
macOS· Apple
90%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

Source: cverecord
https://support.apple.com/en-us/149034
Source: cverecord
https://support.apple.com/en-us/149035
Source: cverecord
https://support.apple.com/en-us/149041
Source: cverecord
https://support.apple.com/en-us/149042
Source: cverecord
https://support.apple.com/en-us/149043

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusUNDERGOING ANALYSIS
CWE
CWE-20

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