Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized 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 · NIST NVD

   Detected

   Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

2. Oct 14, 2026 · NIST NVD

   Updated

   Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Affected

• cpe microsoft/sharepoint serverversion unspecified
• microsoft Microsoft SharePoint Server Subscription Editionversion unspecified
• vendor Microsoft Microsoft SharePoint Server Subscription Editionversion unspecified

Sources

• CIRCL Vulnerability LookupVulnerability recordCVE-2026-88166

  Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

  vulnerability.circl.lu
• CVE.orgVulnerability recordCVE-2026-88166

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-88166

  30-day exploitation probability 0.8%

  first.org
• Microsoft Security Update GuideVendor advisoryCVE-2026-88166

  Microsoft SharePoint Server Subscription Edition

  msrc.microsoft.com
• NIST NVDVulnerability recordCVE-2026-88166

  Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

  nvd.nist.gov

References

• Patch · msrc.microsoft.com