AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-78501

Microsoft 365 Copilot's Business Chat: command injection

Microsoft

CVE-2026-78501 · Published Sep 17, 2026 · updated Oct 7, 2026

High7.4
No fix yet
Microsoft advisory

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.

Affected versions

PackageAffectedFixed in
Microsoft 365 Copilot's Business Chat
Product
all versionsNo fix yet
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-77, CWE-923

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