What’s Vulnerable › Vulnerabilities

CVE-2023-33137: Microsoft Excel Remote Code Execution Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-06-13 · updated 2026-06-17
• Weakness: CWE-415

Description

Microsoft Excel Remote Code Execution Vulnerability

Affected products

• Microsoft Office: 2013-sp1, 2016, 2019
• Microsoft Office Online Server: all versions
• Microsoft Excel 2013 Service Pack 1: from 15.0.0.0 before 15.0.5563.1000 — fixed in 15.0.5563.1000
• Microsoft Excel 2016: from 16.0.0.0 before 16.0.5400.1000 — fixed in 16.0.5400.1000
• Microsoft Office: from 19.0.0 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
• Microsoft Office Online Server: from 16.0.1 before 16.0.10399.20000 — fixed in 16.0.10399.20000

How to fix

Upgrade to a fixed version: Microsoft Excel 2013 Service Pack 1 15.0.5563.1000; Microsoft Excel 2016 16.0.5400.1000; Microsoft Office https://aka.ms/OfficeSecurityReleases; Microsoft Office Online Server 16.0.10399.20000. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33137
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33137

Get alerted when CVE-2023-33137 or the next vulnerability affects your stack