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CVE WatchSep 18, 2026

CVE-2026-78501

Improper neutralization of special elements used in a command ('command injection') in Microsoft 365 Copilot's Business Chat allows an unaut

CVSS

7.4

High

EPSS

0.5%

p41

KEV

—

Exploit Today

12

0-100

Published: Sep 17, 2026 · Last modified: Sep 18, 2026 · CWE-77 · CWE-923

EPSS · 30d
0.5%EPSS · 30 days0.5%
2026-09-182026-09-19
Technical 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.

Official references
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