Is CVE-2021-23205 actively exploited?

No active exploitation of CVE-2021-23205 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-23205 be exploited remotely?

Yes. CVE-2021-23205 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-23205?

CVE-2021-23205 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2021-23205

CWE-116Published: June 11, 2021· Updated: Jun 17, 2026

8.1

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-23205 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.