CVE-2026-65807 in Excel

Summary

by MITRE • 08/11/2026

Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

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• Responsible: Microsoft
• Reservation: 07/22/2026
• Disclosure: 08/11/2026
• Moderation: accepted
• Entry: VDB-388681
• CPE: ready
• CWE: CWE-843 (confirmed)
• CVSS: 6.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Hostingprovider, Lawfirm, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-65807
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-65807
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-65807/