CVE-2023-22439: Gallagher Command Centre

Medium severity, CVSS 4.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Improper input validation of a large HTTP request in the Controller 6000 and Controller 7000 optional diagnostic web interface (Port 80) can be used to perform a Denial of Service of the diagnostic web interface. This issue affects: Gallagher Controller 6000 and 7000 8.90 prior to vCR8.90.231204a (distributed in 8.90.1620 (MR2)), 8.80 prior to vCR8.80.231204a (distributed in 8.80.1369 (MR3)), 8.70 prior to vCR8.70.231204a (distributed in 8.70.2375 (MR5)), 8.60 prior to vCR8.60.231116a (distributed in 8.60.2550 (MR7)), all versions of 8.50 and prior.

Affected products

• Gallagher Command Centre: up to and including 8.50; from 8.60, before 8.60.231116a (fixed in 8.60.231116a); from 8.70, before 8.70.231204a (fixed in 8.70.231204a); from 8.80, before 8.80.231204a (fixed in 8.80.231204a); from 8.90, before 8.90.231204a (fixed in 8.90.231204a)
• Gallagher Controller 6000 Firmware: up to and including 8.50; from 8.60, before 8.60.231116a (fixed in 8.60.231116a); from 8.70, before 8.70.231204a (fixed in 8.70.231204a); from 8.80, before 8.80.231204a (fixed in 8.80.231204a); from 8.90, before 8.90.231204a (fixed in 8.90.231204a)

Published 2023-12-18. Last modified 2026-06-17.