dbugs (@ptdbugs) on X
CVE-2026-106173 is a critical (CVSS 9.4) unauthenticated arbitrary file write in FortiSIEM's phQueryMaster gRPC service on port 27918/TCP. The SendQueryResult method builds a path from the query-id parameter without validation, so "../" sequences escape the directory and a null byte drops the appended filename and extension. Overwriting /opt/charting/redishb.sh, which runs every 60 seconds, gives remote command execution. Horizon3.ai published the analysis and a PoC.
Offensive Security, AppSecΒ· Added 27 Oct 2026, published 26 Oct 2026
















