What’s Vulnerable › Vulnerabilities

CVE-2026-45461: Microsoft Office Remote Code Execution Vulnerability

• Severity: high (CVSS 8.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-09 · updated 2026-07-23
• Weakness: CWE-416

Description

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

Affected products

• Microsoft 365 Apps: all versions
• Microsoft 365 Copilot: all versions
• Microsoft 365: all versions
• Microsoft Office 2016: all versions
• Microsoft Office 2019: all versions
• Microsoft Office 2021: all versions
• Microsoft Office LTSC 2024: all versions

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45461

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