CVE-2026-77901 in Office

Summary

by MITRE • 09/08/2026

Null pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

• Responsible: Microsoft
• Reservation: 08/21/2026
• Disclosure: 09/08/2026
• Moderation: accepted
• Entry: VDB-400850
• CPE: ready
• CWE: CWE-476 (confirmed)
• CVSS: 8.8 (CNA)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Education, Lawfirm, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-77901
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-77901
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-77901/