CVE-2021-30827 Privilege escalation in macOS

What is CVE-2021-30827?

CVE-2021-30827 is a high-severity vulnerability in Apple Mac Os X, published on 19 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A permissions issue existed. This issue was addressed with improved permission validation. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local attacker may be able to elevate their privileges.

Weakness: CWE-281

Which versions are affected by CVE-2021-30827?

It affects 2 products.

Products include Apple Mac Os X, Apple Macos.

How do I fix CVE-2021-30827?

No fix has been published for CVE-2021-30827 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-30827 being exploited?

There is no known exploitation of CVE-2021-30827 in the wild and no public exploit code.

Other vulnerabilities in Apple Mac Os X

• CVE-2014-7169 GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Exploited Critical 9.8
• CVE-2014-6271 GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Exploited Critical 9.8
• CVE-2012-1823 PHP-CGI Query String Parameter Exploited Critical 9.8
• CVE-2021-30713 Apple macOS Unspecified Exploited High 7.8
• CVE-2019-8526 Apple macOS Use-After-Free Exploited High 7.8

All Apple Mac Os X vulnerabilities

Sources

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

Also known as GHSA-839f-x26x-pq92.