CVE-2021-23155

Severity: medium (CVSS 6.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-18 · updated 2026-06-17
Weakness: CWE-296

Description

Improper validation of the cloud certificate chain in Mobile Client allows man-in-the-middle attack to impersonate the legitimate Command Centre Server. This issue affects: Gallagher Command Centre Mobile Client for Android 8.60 versions prior to 8.60.065; version 8.50 and prior versions.

Affected products

Gallagher Command Centre Mobile Client for Android: through 8.50; from 8.60 before 8.60.065 — fixed in 8.60.065

How to fix

Upgrade to a fixed version: Gallagher Command Centre Mobile Client for Android 8.60.065. Check the vendor advisory for mitigations.

References

https://security.gallagher.com/Security-Advisories/CVE-2021-23155
https://security.gallagher.com/Security-Advisories/CVE-2021-23155

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