Improper neutralization of special elements used in a command ('command injection') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to disclose information over a network.
History

Wed, 14 Oct 2026 23:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C'}

cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C'}


Wed, 07 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft 365 Copilot Chat
CPEs cpe:2.3:a:microsoft:365_copilot_chat:-:*:*:*:*:*:*:*
Vendors & Products Microsoft 365 Copilot Chat

Sun, 20 Sep 2026 03:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 17 Sep 2026 23:15:00 +0000

Type Values Removed Values Added
Description Improper neutralization of special elements used in a command ('command injection') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to disclose information over a network.
Title Microsoft 365 Copilot Business Chat Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft 365 Copilot Business Chat
Weaknesses CWE-77
CWE-923
CPEs cpe:2.3:a:microsoft:365_copilot_business_chat:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft 365 Copilot Business Chat
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C'}


cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-09-17T22:55:56.907Z

Updated: 2026-10-14T23:09:33.284Z

Reserved: 2026-08-24T17:28:00.621Z

Link: CVE-2026-78501

cve-icon Vulnrichment

Updated: 2026-09-18T14:30:30.502Z

cve-icon NVD

Status : Modified

Published: 2026-09-17T23:18:45.770

Modified: 2026-10-14T23:19:04.093

Link: CVE-2026-78501

cve-icon Redhat

No data.