CVE-2026-68798: Microsoft Excel Remote Code Execution Vulnerability

Published Aug 11, 2026
·
Updated

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Other sources

Microsoft Excel Remote Code Execution Vulnerability

— Microsoft

Affected Software

18 affected componentsFixes available
Microsoft Office LTSC for Mac 2024<16.112.26081010
16.112.26081010
Microsoft Office 365 for Mac<16.112.26081010
16.112.26081010
Microsoft Office LTSC 2021 for 32-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC for Mac 2021<16.112.26081010
16.112.26081010
Microsoft 365 Apps for Enterprise<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2024 for 32-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2024 for 64-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft 365 Apps for Enterprise<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2021 for 64-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft 365 Apps
Microsoft 365 Apps
Microsoft Microsoft 365 Macos
Microsoft Office 2021
Microsoft Office 2021
Microsoft Office 2021 Macos
Microsoft Office 2024
Microsoft Office 2024
Microsoft Office 2024 Macos

Remediation

Patch Available

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68798

Event History

Aug 11, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:07 PM
Data Sourced
via MITRE·05:07 PM
DescriptionSeverity
Data Sourced
via NVD·05:19 PM
RemedyDescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-68798?

The severity of CVE-2026-68798 is high with a CVSS score of 7.8.

2

How do I fix CVE-2026-68798?

You can fix CVE-2026-68798 by applying the available patch provided by Microsoft.

3

What impact does CVE-2026-68798 have on affected software?

CVE-2026-68798 allows an unauthorized attacker to execute code locally, potentially compromising system security.

4

Which products are affected by CVE-2026-68798?

CVE-2026-68798 affects Microsoft 365 Apps for Enterprise, Microsoft Office 2021, Office 2024, and various LTSC versions.

5

What type of vulnerability is CVE-2026-68798 classified as?

CVE-2026-68798 is classified as a heap-based buffer overflow vulnerability.

Company

Resources

Contact

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