CVE-2026-78501: Microsoft 365 Copilot Business Chat 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 45% of scored CVEs
DescriptionCVE.org
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 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.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Microsoft
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-78501 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.