Multiple vulnerabilities in Microsoft Apps

Description

Multiple vulnerabilities were found in Microsoft Apps. Malicious users can exploit these vulnerabilities to bypass security restrictions, gain privileges, obtain sensitive information.

Below is a complete list of vulnerabilities:

1. An information disclosure vulnerability in Microsoft 365 Copilot Business Chat can be exploited remotely to obtain sensitive information.
2. An elevation of privilege vulnerability in Microsoft 365 Copilot can be exploited remotely to gain privileges.
3. An information disclosure vulnerability in M365 Copilot can be exploited remotely to obtain sensitive information.

Original advisories

• CVE-2026-78501

• CVE-2026-85885
• CVE-2026-85887

Exploitation

Related products

• Microsoft-365

CVE list

• CVE-2026-78501
  unknown
• CVE-2026-85885
  critical
• CVE-2026-85887
  critical

KB list

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