Microsoft security update for CVE-2026-78439 — Microsoft Office
🔗 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-2026-78439. This page also shows what EchelonGraph holds for CVE-2026-78439, 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 products4
- Microsoft Office 365 for Mac
- Microsoft Office LTSC for Mac 2021
- Microsoft Office LTSC for Mac 2024
- Microsoft Office for Android
✅ Updates Microsoft lists: 3 updates
3 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 | 16.113.26091433 |
| — | Security Update | 16.0.20430.20000 |
| — | Security Update | 16.113.26091433 |
🧭 EchelonGraph on CVE-2026-78439
- 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
Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
Published by Microsoft Corporation, the CVE Numbering Authority that assigned CVE-2026-78439, 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 (5)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78439
- patchhttps://go.microsoft.com/fwlink/p/?linkid=831049
- patchhttps://play.google.com/store/apps/details?id=com.microsoft.office.officehubrow
- referencehttps://support.google.com/googleplay/answer/113412?hl=en
- patchhttps://www.microsoft.com/en-us/microsoft-365/mac/microsoft-365-for-mac?msockid=35f9adb0e74b61392038b90de6fe608c