CVE-2020-27893
An issue existed in screen sharing. This issue was addressed with improved state management. This...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2020-27893- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:P/I:N/A:N - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2020-27893- Updated
- 2026-11-02
EUVDEUVD-2020-20386 No score
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.
- Record
EUVD-2020-20386- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2j87-rjcp-pm33 No score
An issue existed in screen sharing. This issue was addressed with improved state management. This...
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.
- Record
GHSA-2j87-rjcp-pm33- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-27893 is a medium vulnerability (CVSS 6.5) in Apple Macos, published April 2, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.85%, the 58th percentile. No source names a fixed version.