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CVE-2026-20631

HIGH CVSS 3.1: 8.8 EPSS 0.03%
Updated Mar 26, 2026
Apple
Parameter Value
CVSS 8.8 (HIGH)
Affected Versions 26.0 — 26.4
Vendor Apple
Public PoC No

A logic issue was addressed with improved checks. This issue is fixed in macOS Tahoe 26.4. A user may be able to elevate privileges.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Apple Macos
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
26.0 <= 26.4