Vulnerability Description
Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVSS Score
6.2
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | 365 Apps | - |
| Microsoft | Microsoft 365 | - |
| Microsoft | Office 2016 | - |
| Microsoft | Office 2019 | - |
| Microsoft | Office 2021 | - |
| Microsoft | Office 2024 | - |
| Microsoft | Sharepoint Server | < 16.0.19725.20434 |
Related Weaknesses (CWE)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55026PatchVendor Advisory
FAQ
What is CVE-2026-55026?
CVE-2026-55026 is a vulnerability with a CVSS score of 6.2 (MEDIUM). Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose information locally.
How severe is CVE-2026-55026?
CVE-2026-55026 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-55026?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft 365 Apps, Microsoft Microsoft 365, Microsoft Office 2016, Microsoft Office 2019, Microsoft Office 2021.