CVE-2021-30813 Auth bypass in macOS

What is CVE-2021-30813?

CVE-2021-30813 is a medium-severity authentication bypass vulnerability in Apple Macos, published on 28 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

This issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.0.1. A person with access to a host Mac may be able to bypass the Login Window in Remote Desktop for a locked instance of macOS.

Which versions are affected by CVE-2021-30813?

It affects 1 product.

Products include Apple Macos.

How do I fix CVE-2021-30813?

No fix has been published for CVE-2021-30813 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2021-30813 being exploited?

There is no known exploitation of CVE-2021-30813 in the wild and no public exploit code.

Other vulnerabilities in Apple Macos

• CVE-2026-65400 Apple macOS Improper Authentication Exploited Critical 9.8
• CVE-2024-44146 Security feature bypass in macOS Critical 10.0
• CVE-2024-44148 Security feature bypass in macOS Critical 10.0
• CVE-2023-38586 Security feature bypass in macOS Critical 10.0
• CVE-2023-40455 Security feature bypass in macOS Critical 10.0

All Apple Macos vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-p925-9m9r-7rqh.