CVE-2026-78439CriticalCVSS 8.8
Microsoft Office Graphics Component Remote Code Execution Vulnerability
🔗 CVE IDs covered (1)
📋 Description
Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
🎯 Affected products4
- Microsoft Office 365 for Mac
- Microsoft Office LTSC for Mac 2021
- Microsoft Office LTSC for Mac 2024
- Microsoft Office for Android
✅ Remediation
KBRelease Notes (Security Update) — fixed build 16.113.26091433 KBRelease Notes (Security Update) — fixed build 16.0.20430.20000
🔗 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