Findings

CVE-2026-108438

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

Published Oct 15, 2026 · updated Oct 16, 2026 · Microsoft Microsoft 365

Affected Microsoft products: Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac 2024, Microsoft Office LTSC for Mac 2021.

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 15, 2026 · NIST NVD

    Detected

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

  2. Oct 16, 2026 · NIST NVD

    Updated

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

Affected

  • 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-2026-108438

    Official CVE identifier

    cve.org
  • Microsoft Security Update GuideVendor advisoryCVE-2026-108438

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

    msrc.microsoft.com
  • NIST NVDVulnerability recordCVE-2026-108438

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

    nvd.nist.gov

References

CVE-2026-108438 · ZeroDay Findings