Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.

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. Oct 13, 2026 · Microsoft Security Update Guide

   Detected

   Affected Microsoft products: Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC 2024 for 32-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac 2024.

2. Oct 15, 2026 · NIST NVD

   Updated

   Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.

3. Oct 15, 2026 · NIST NVD

   Updated

   Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.

Affected

• cpe microsoft/365 appsversion unspecified
• cpe microsoft/microsoft 365version unspecified
• cpe microsoft/office 2021version unspecified
• cpe microsoft/office 2024version unspecified
• microsoft Microsoft Office 365 for Macversion unspecified
• microsoft Microsoft Office LTSC 2021 for 32-bit editionsversion unspecified
• microsoft Microsoft Office LTSC 2021 for 64-bit editionsversion unspecified
• microsoft Microsoft Office LTSC 2024 for 32-bit editionsversion unspecified
• microsoft Microsoft Office LTSC 2024 for 64-bit editionsversion unspecified
• microsoft Microsoft Office LTSC for Mac 2021version unspecified
• microsoft Microsoft Office LTSC for Mac 2024version unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-88207

  Official CVE identifier

  cve.org
• Microsoft Security Update GuideVendor advisoryCVE-2026-88207

  Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC 2024 for 32-bit editions

  msrc.microsoft.com
• NIST NVDVulnerability recordCVE-2026-88207

  Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.

  nvd.nist.gov

References

• Microsoft Security Update Guide · msrc.microsoft.com