CVE-2025-53787: Microsoft 365 copilot chat command injection vulnerability

Microsoft · 365 Copilot Chat

Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

7.5 CVSS 3.1 High EPSS 0.71% · top 48.3% CWE-77 · Command injection

7.5CVSS 3.1 base score

0.71%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

1References

17 Jun 2026Last modified by NVD

Description

Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

365 Copilot Chat Microsoft

References

Link	Tags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53787	Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2026-26137Microsoft 365 copilot chat server-side request forgery (ssrf) vulnerabilityServer-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a network.EPSS 0.72%19 Mar 2026 9.3CVE-2025-59286Microsoft 365 copilot chat command injection vulnerabilityImproper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to disclose informatio…EPSS 0.57%9 Oct 2025 9.3CVE-2025-59272Microsoft 365 copilot chat command injection vulnerabilityImproper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to perform information…EPSS 0.57%9 Oct 2025 7.5CVE-2026-26129Microsoft 365 copilot chat vulnerabilityImproper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose infor…EPSS 1.0%7 May 2026 7.5CVE-2026-26164Microsoft 365 copilot chat injection vulnerabilityImproper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose infor…EPSS 1.0%7 May 2026 7.5CVE-2025-53774Microsoft 365 copilot chat command injection vulnerabilityMicrosoft 365 Copilot BizChat Information Disclosure VulnerabilityEPSS 0.61%7 Aug 2025 9.8CVE-2026-8037Progress LoadMaster API OS Command Injection RCEProgress LoadMaster (and related ADC products) contain an OS command injection flaw in multiple API command endpoints where unsanitized input is pass…KEVEPSS 77%analysed4 Jun 2026 8.7CVE-2026-42271LiteLLM MCP test endpoints allow authenticated OS command injectionLiteLLM versions 1.74.2 through before 1.83.7 expose two MCP preview endpoints (POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list) th…KEVEPSS 13%analysed8 May 2026

Source: NIST National Vulnerability Database (record CVE-2025-53787), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.