Multiple vulnerabilities in Microsoft Apps

Description

Multiple vulnerabilities were found in Microsoft Apps. Malicious users can exploit these vulnerabilities to obtain sensitive information, spoof user interface.

Below is a complete list of vulnerabilities:

1. An information disclosure vulnerability in M365 Copilot can be exploited remotely to obtain sensitive information.
2. A tampering vulnerability in Microsoft Copilot can be exploited remotely to spoof user interface.

Original advisories

• CVE-2026-42827

• CVE-2026-41090

Exploitation

Related products

• Microsoft-365

CVE list

• CVE-2026-42827
  critical
• CVE-2026-41090
  critical

KB list

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