Microsoft security update for CVE-2026-124187
🔗 CVE IDs covered (1)
📋 Microsoft's advisory
EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-124187. This page also shows what EchelonGraph holds for CVE-2026-124187, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.
🎯 Affected products9
- Microsoft 365 Apps for Enterprise for 32-bit Systems
- Microsoft 365 Apps for Enterprise for 64-bit Systems
- Microsoft Office 365 for Mac
- Microsoft Office LTSC 2021 for 32-bit editions
- Microsoft Office LTSC 2021 for 64-bit editions
- Microsoft Office LTSC 2024 for 32-bit editions
- Microsoft Office LTSC 2024 for 64-bit editions
- Microsoft Office LTSC for Mac 2021
- Microsoft Office LTSC for Mac 2024
✅ Updates Microsoft lists: 4 updates
4 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.
| KB article | Update | Fixed build |
|---|---|---|
| — | Security Update | 16.115.26110837 |
| — | Security Update | 16.0.14334.21048 |
| — | Security Update | 16.0.17932.21140 |
| — | Security Update | release notes |
🧭 EchelonGraph on CVE-2026-124187
- EchelonGraph score
- 8.8 HIGH
- CISA KEV
- Not listed
- Fix status
- A fix is available — apply it.
Description from the CVE record (CVE.org), as published by its numbering authority
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Published by Microsoft Corporation, the CVE Numbering Authority that assigned CVE-2026-124187, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).
🔗 References (4)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-124187
- patchhttps://learn.microsoft.com/en-us/officeupdates/release-notes-office-for-mac
- referencehttps://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
- referencehttps://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates