CVE-2025-52457: Gallagher Hbus Devices

Medium severity, CVSS 5.7. EPSS: 0.1% chance of exploitation in the next 30 days.

Observable Timing Discrepancy (CWE-208) in HBUS devices may allow an attacker with physical access to the device to extract device-specific keys, potentially compromising further site security. This issue affects Command Centre Server: 9.30 prior to vCR9.30.251028a (distributed in 9.30.2881 (MR3)), 9.20 prior to vCR9.20.251028a (distributed in 9.20.3265 (MR5)), 9.10 prior to vCR9.10.251028a (distributed in 9.10.4135 (MR8)), all versions of 9.00 and prior.

Affected products

• Gallagher Hbus Devices: up to and including 9.00

Published 2025-11-18. Last modified 2026-06-17.