CVE-2021-23205: Gallagher Command Centre

High severity, CVSS 8.1. EPSS: 0.9% chance of exploitation in the next 30 days.

Improper Encoding or Escaping in Gallagher Command Centre Server allows a Command Centre Operator to alter the configuration of Controllers and other hardware items beyond their privilege. This issue affects: Gallagher Command Centre 8.40 versions prior to 8.40.1888 (MR3); 8.30 versions prior to 8.30.1359 (MR3); 8.20 versions prior to 8.20.1259 (MR5); version 8.10 and prior versions.

Affected products

• Gallagher Command Centre: up to and including 8.10; from 8.20, before 8.20.1259 (fixed in 8.20.1259); from 8.30, before 8.30.1359 (fixed in 8.30.1359); from 8.40, before 8.40.1888 (fixed in 8.40.1888)

Published 2021-06-11. Last modified 2026-06-17.