CVE-2026-54130CriticalMonitor
M365 Copilot Information Disclosure Vulnerability
Severity Critical · Urgency Monitor
Why it matters: Critical severity (CVSS 9.8)
Information Disclosure · Critical · CVSS 9.8. Affects: Microsoft 365 Copilot.
Affected: Microsoft 365 Copilot
Change history
2026-06-23 · First seen