CVE-2026-45459ImportantMonitor
Microsoft Excel Security Feature Bypass Vulnerability
Severity Important · Urgency Monitor
Why it matters: Important severity (CVSS 3.3)
Security Feature Bypass · Important · CVSS 3.3. Affects: Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office LTSC, Microsoft Office 365 for Mac.
Affected: Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office LTSC, Microsoft Office 365 for Mac
Change history
2026-06-23 · First seen