What’s Vulnerable › Vulnerabilities

CVE-2020-3946

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-04-20 · updated 2026-06-17
• Weakness: CWE-776

Description

InstallBuilder AutoUpdate tool and regular installers enabling <checkForUpdates> built with versions earlier than 19.11 are vulnerable to Billion laughs attack (denial-of-service).

Affected products

• VMware InstallBuilder: before 19.11.0 — fixed in 19.11.0
• VMware InstallBuilder: All versions prior to version 19.11.0

How to fix

Upgrade to a fixed version: VMware InstallBuilder 19.11.0. Check the vendor advisory for mitigations.

References

• https://blog.installbuilder.com/2019/12/configure-autoupdate-project-settings.html
• https://blog.installbuilder.com/2019/12/configure-autoupdate-project-settings.html

Get alerted when CVE-2020-3946 or the next vulnerability affects your stack