CVE-2026-70219 - Microsoft Defender Business Information Disclosure
Severity: MEDIUM (CVSS 6.5)
Affected Product:
- Microsoft Defender Business
Description: Out-of-bounds read in Microsoft Office Excel enables unauthorized attackers to disclose information over a network.
KEV Status: Not currently exploited in the wild
Remediation: Apply security updates from Microsoft. Refer to the official advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70219