CVE-2026-55026 in Office

Summary

by MITRE • 07/14/2026

Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose information locally.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

• Responsible: Microsoft
• Reservation: 06/16/2026
• Disclosure: 07/14/2026
• Moderation: accepted
• Entry: VDB-378807
• CPE: ready
• CWE: CWE-190 (confirmed)
• CVSS: 3.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Pharma, Police, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-55026
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-55026
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-55026/