CVE-2026-20658

HIGH

macOS Tahoe <26.3 - Privilege Escalation

Title source: llm
STIX 2.1

Description

A package validation issue was addressed by blocking the vulnerable package. This issue is fixed in macOS Tahoe 26.3. An app may be able to gain root privileges.

References (1)

Core 1
Core References
Release Notes, Vendor Advisory
https://support.apple.com/en-us/126348

Scores

CVSS v3 7.8
EPSS 0.0002
EPSS Percentile 5.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

Status published
Products (2)
Apple/macOS < 26.3
apple/macos 26.0 - 26.3
Published Feb 11, 2026
Tracked Since Feb 18, 2026