Multiple vulnerabilities in Microsoft Apps

Description

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

Below is a complete list of vulnerabilities:

1. An elevation of privilege vulnerability in Microsoft 365 Copilot BizChat can be exploited remotely to gain privileges.
2. An information disclosure vulnerability in M365 Copilot can be exploited remotely to obtain sensitive information.
3. A tampering vulnerability in Microsoft Bing can be exploited remotely to spoof user interface.

Original advisories

• CVE-2026-26137

• CVE-2026-24299
• CVE-2026-26120

Exploitation

Related products

• Microsoft-Bing
• Microsoft-365

CVE list

• CVE-2026-24299
  high
• CVE-2026-26120
  high
• CVE-2026-26137
  critical

Read more

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