CVE-2026-78514 Advisory
Severity: HIGH (CVSS 8.8)
Affected Product:
- Microsoft Defender Business
Vulnerability Type: Use-after-free in Microsoft Office Word enabling remote code execution over a network.
KEV Status: Not currently listed as exploited in the wild.
Remediation:
- Review and apply security updates from Microsoft Security Response Center (MSRC)
- Reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78514
Recommendation: Prioritize patching due to HIGH severity rating and network-based attack vector.