CVE-2026-42895CriticalMonitor
Microsoft Copilot Tampering Vulnerability
Severity Critical · Urgency Monitor
Why it matters: Critical severity (CVSS 6.5)
Tampering · Critical · CVSS 6.5. Affects: Microsoft 365 Copilot.
Affected: Microsoft 365 Copilot
Change history
2026-06-23 · First seen