CVE-2026-78522 - Microsoft Defender Business Out-of-Bounds Read
Severity: MEDIUM (CVSS 6.5)
KEV Status: Not exploited in the wild
Description: Out-of-bounds read vulnerability in Microsoft Office Word that allows unauthorized disclosure of information over a network.
Affected Products:
- Microsoft Defender Business
Remediation: Apply security updates from Microsoft. See official guidance at: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78522