CVE-2021-23136

Name: CVE-2021-23136
Creator: NVD / NIST
Published: 2021-06-11T16:15:11.993+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.58%

Last modified Jun 17, 2026

CVE-2021-23136 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.58%

43.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-285

Affected Software

Vendor	Product	Versions
Gallagher	Command Centre	<= 8.10
Gallagher	Command Centre	>= 8.20, < 8.20.1259
Gallagher	Command Centre	>= 8.30, < 8.30.1359
Gallagher	Command Centre	>= 8.40, < 8.40.1888

References

https://security.gallagher.com/Security-Advisories/CVE-2021-23136Vendor Advisory
https://security.gallagher.com/Security-Advisories/CVE-2021-23136Vendor Advisory

Timeline

Published: Jun 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23136?

How severe is CVE-2021-23136?

CVE-2021-23136 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23136?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23136?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST