ZeroDay Findings
Sign inSign up

Findings

CVE-2026-40359

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

Published May 12, 2026 · updated Jun 17, 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. May 12, 2026 · NIST NVD

    Detected

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

  2. Jun 17, 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-2026-40359

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-40359

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

    nvd.nist.gov

References