Use after free in Microsoft Office Excel allows an unauthorized attacker to disclose information 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

   Use after free in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

2. Oct 14, 2026 · NIST NVD

   Updated

   Use after free in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

3. Oct 15, 2026 · NIST NVD

   Updated

   Use after free in Microsoft Office Excel allows an unauthorized attacker to disclose information 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 for Mac 2021version unspecified
• microsoft Microsoft Office LTSC for Mac 2024version unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-97743

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-97743

  30-day exploitation probability 0.8%

  first.org
• Microsoft Security Update GuideVendor advisoryCVE-2026-97743

  Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac 2024, Microsoft Office LTSC for Mac 2021

  msrc.microsoft.com
• NIST NVDVulnerability recordCVE-2026-97743

  Use after free in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

  nvd.nist.gov

References

• Vendor Advisory · msrc.microsoft.com