What is CVE-2025-53774?

CVE-2025-53774 is a medium-severity vulnerability in Microsoft 365 Copilot's Business Chat, classified under Command Injection. CVSS score: 6.5/10. Published 2025-08-07.

How severe is CVE-2025-53774?

Medium severity. CVSS v3 base score is 6.5 out of 10.

RCE in Microsoft 365 Copilot's Business Chat

CVE-2025-53774

Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.020 (84.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C.

Affected products

Microsoft 365 Copilot's Business Chat

Weakness classification (CWE)

CWE-77 — Command Injection

References

Microsoft 365 Copilot BizChat Information Disclosure Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2025-53774?: CVE-2025-53774 is a medium-severity vulnerability in Microsoft 365 Copilot's Business Chat, classified under Command Injection. CVSS score: 6.5/10. Published 2025-08-07.
How severe is CVE-2025-53774?: Medium severity. CVSS v3 base score is 6.5 out of 10.