What’s Vulnerable › Vulnerabilities

CVE-2025-53774: Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-07 · updated 2026-06-17
• Weakness: CWE-77

Description

Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

Affected products

• Microsoft 365 Copilot's Business Chat: all versions
• Microsoft 365 Copilot's Business Chat: all versions

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53774

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