What’s Vulnerable › Vulnerabilities

CVE-2020-11443

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-05-04 · updated 2026-06-17
• Weakness: CWE-59

Description

The Zoom IT installer for Windows (ZoomInstallerFull.msi) prior to version 4.6.10 deletes files located in %APPDATA%\Zoom before installing an updated version of the client. Standard users are able to write to this directory, and can write links to other directories on the machine. As the installer runs with SYSTEM privileges and follows these links, a user can cause the installer to delete files that otherwise cannot be deleted by the user.

Affected products

• Zoom It Installer: before 4.6.10 — fixed in 4.6.10

How to fix

Upgrade to a fixed version: Zoom It Installer 4.6.10. Check the vendor advisory for mitigations.

References

• https://support.zoom.us/hc/en-us/articles/201361953-New-Updates-for-Windows
• https://support.zoom.us/hc/en-us/articles/360043036451
• https://support.zoom.us/hc/en-us/articles/360043036451-Security-CVE-2020-11443
• https://support.zoom.us/hc/en-us/articles/201361953-New-Updates-for-Windows
• https://support.zoom.us/hc/en-us/articles/360043036451
• https://support.zoom.us/hc/en-us/articles/360043036451-Security-CVE-2020-11443

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