CVE-2020-27893 Information disclosure in macOS

What is CVE-2020-27893?

CVE-2020-27893 is a medium-severity vulnerability in Apple Macos, published on 2 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue existed in screen sharing. This issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1. A user with screen sharing access may be able to view another user's screen.

Which versions are affected by CVE-2020-27893?

It affects 1 product.

Products include Apple Macos.

How do I fix CVE-2020-27893?

No fix has been published for CVE-2020-27893 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-27893 being exploited?

There is no known exploitation of CVE-2020-27893 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-2j87-rjcp-pm33.