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

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Mar 10, 2026 · NIST NVD

   Detected

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

2. Jun 17, 2026 · NIST NVD

   Updated

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

Affected

• cpe microsoft/365 appsversion unspecified
• cpe microsoft/excel2016
• cpe microsoft/office2019
• cpe microsoft/office long term servicing channel2021

Sources

• NIST NVDVulnerability recordCVE-2026-26108

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

  nvd.nist.gov

References

• Vendor Advisory · msrc.microsoft.com