Google: CVE-2026-111497 Buffer overflow vulnerability in the Brotli decoder
CVE-2026-111497
Summary
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Products covered
Microsoft 365 Copilot's Business Chat
Remediation
Separate remediation guidance was not included in the collected bulletin.
CVEs in this advisory 1
Updates
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Added to SecurityAlert
We collected the advisory from the official source.
- Confirmed at the source
Our collector saw this advisory during a later source check.