CVE-2026-100212
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Published Oct 13, 2026 · updated Oct 14, 2026 · Microsoft Microsoft 365 Apps for Enterprise
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Timeline
Detection, updates, and resolution for this record.
Oct 13, 2026 · NIST NVD
Detected
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Oct 14, 2026 · NIST NVD
Updated
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected
- cpe microsoft/365 appsversion unspecified
- cpe microsoft/microsoft 365version unspecified
- cpe microsoft/office 2021version unspecified
- cpe microsoft/office 2024version unspecified
- vendor Microsoft Microsoft 365 Apps for Enterpriseversion unspecified
- vendor Microsoft Microsoft Office 365 for Macversion unspecified
- vendor Microsoft Microsoft Office LTSC 2021version unspecified
- vendor Microsoft Microsoft Office LTSC 2024version unspecified
- vendor Microsoft Microsoft Office LTSC for Mac 2021version unspecified
- vendor Microsoft Microsoft Office LTSC for Mac 2024version unspecified
- vendor Microsoft Office Online Serverversion unspecified
Sources
- CIRCL Vulnerability LookupCVE-2026-100212
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
vulnerability.circl.lu - CVE.orgCVE-2026-100212
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-100212
30-day exploitation probability 0.8%
first.org - NIST NVDCVE-2026-100212
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
nvd.nist.gov