Is CVE-2021-23136 actively exploited?

No active exploitation of CVE-2021-23136 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-23136 be exploited remotely?

Yes. CVE-2021-23136 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-23136?

CVE-2021-23136 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2021-23136

CWE-285Published: June 11, 2021· Updated: Jun 17, 2026

6.5

CVSS v3.1

Official Description

Improper Authorization vulnerability in Gallagher Command Centre Server allows macro overrides to be performed by an unprivileged Command Centre Operator. 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-2021-23136 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), with a CVSS base score of 6.5.