Findings

CVE-2025-62563

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Published Dec 9, 2025 · updated Oct 14, 2026 · microsoft 365 apps

Use after free 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. Dec 9, 2025 · NIST NVD

    Detected

    Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

  2. Oct 14, 2026 · NIST NVD

    Updated

    Use after free 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

  • CVE.orgVulnerability recordCVE-2025-62563

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-62563

    30-day exploitation probability 0.6%

    first.org
  • NIST NVDVulnerability recordCVE-2025-62563

    Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

    nvd.nist.gov

References

CVE-2025-62563 · ZeroDay Findings