CVE-2021-23205

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-06-11 · updated 2026-06-17
Weakness: CWE-116

Description

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: through 8.10; from 8.20 before 8.20.1259; from 8.30 before 8.30.1359; from 8.40 before 8.40.1888 — fixed in 8.20.1259, 8.30.1359, 8.40.1888

How to fix

Upgrade to a fixed version: Gallagher Command Centre 8.20.1259, 8.30.1359, 8.40.1888. Check the vendor advisory for mitigations.

References

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