CVE-2026-26164: M365 Copilot Information Disclosure Vulnerability
Microsoft · Microsoft 365 Copilot's Business Chat
Vendor fix available · Affected: Microsoft 365 Copilot's Business Chat · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 57% of scored CVEs
DescriptionCVE.org
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Microsoft · Microsoft 365 Copilot's Business ChatVersions not stated
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
CoverageNo articles yet
No CyberSIXT article names CVE-2026-26164 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.