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Findings

CVE-2025-62556

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

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

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 9, 2025 · NIST NVD

    Detected

    Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

  2. Oct 14, 2026 · NIST NVD

    Updated

    Untrusted pointer dereference 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.orgCVE-2025-62556

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2025-62556

    30-day exploitation probability 0.6%

    first.org
  • NIST NVDCVE-2025-62556

    Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

    nvd.nist.gov

References