CVE-2021-23167: Gallagher Command Centre

Medium severity, CVSS 6.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper certificate validation vulnerability in SMTP Client allows man-in-the-middle attack to retrieve sensitive information from the Command Centre Server. This issue affects: Gallagher Command Centre 8.50 versions prior to 8.50.2048 (MR3); 8.40 versions prior to 8.40.2063 (MR4); 8.30 versions prior to 8.30.1454 (MR4) ; version 8.20 and prior versions.

Affected products

• Gallagher Command Centre: up to and including 8.20; from 8.30, before 8.30.1454 (fixed in 8.30.1454); from 8.40, before 8.40.2063 (fixed in 8.40.2063); from 8.50, before 8.50.2048 (fixed in 8.50.2048)

Published 2021-11-18. Last modified 2026-06-17.