What’s Vulnerable › Vulnerabilities

CVE-2020-16918: Base3D Remote Code Execution Vulnerability

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-16 · updated 2026-06-17
• Weakness: CWE-787

Description

<p>A remote code execution vulnerability exists when the Base3D rendering engine improperly handles memory.</p> <p>An attacker who successfully exploited the vulnerability would gain execution on a victim system.</p> <p>The security update addresses the vulnerability by correcting how the Base3D rendering engine handles memory.</p>

Affected products

• Microsoft 365 Apps: all versions
• Microsoft 3D Viewer: all versions
• Microsoft 365 Apps: from 16.0.1 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft 3D Viewer: from 7.0.0 before publication — fixed in publication

How to fix

Upgrade to a fixed version: Microsoft 365 Apps https://aka.ms/OfficeSecurityReleases; Microsoft 3D Viewer publication. Check the vendor advisory for mitigations.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16918
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16918

Get alerted when CVE-2020-16918 or the next vulnerability affects your stack