What’s Vulnerable › Vulnerabilities

CVE-2021-43209: 3D Viewer Remote Code Execution Vulnerability

• Severity: medium (CVSS 6.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-10 · updated 2026-08-19

Description

3D Viewer Remote Code Execution Vulnerability

Affected products

• Microsoft 3D Viewer: before 7.2107.7012.0 — fixed in 7.2107.7012.0
• Microsoft 3D Viewer: from 7.0.0 before 7.2107.7012.0 — fixed in 7.2107.7012.0

How to fix

Upgrade to a fixed version: Microsoft 3D Viewer 7.2107.7012.0; Microsoft 3D Viewer 7.2107.7012.0. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-43209
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43209
• https://www.zerodayinitiative.com/advisories/ZDI-21-909/

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