CVE-2021-30856

CRITICAL

macOS Big Sur <11.3 - Privilege Escalation

Title source: llm
STIX 2.1

Description

This issue was addressed by adding a new Remote Login option for opting into Full Disk Access for Secure Shell sessions. This issue is fixed in macOS Big Sur 11.3. A malicious unsandboxed app on a system with Remote Login enabled may bypass Privacy preferences.

References (1)

Core 1
Core References
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212325

Scores

CVSS v3 9.1
EPSS 0.0094
EPSS Percentile 56.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Details

CWE
CWE-863
Status published
Products (1)
apple/macos 11.0 - 11.3
Published Aug 24, 2021
Tracked Since Feb 18, 2026