CVE-2021-23205

Name: CVE-2021-23205
Creator: NVD / NIST
Published: 2021-06-11T16:15:12.243+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.87%

Last modified Jun 17, 2026

CVE-2021-23205 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.87%

54.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

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-2021-23205Vendor Advisory
https://security.gallagher.com/Security-Advisories/CVE-2021-23205Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-23205?

How severe is CVE-2021-23205?

CVE-2021-23205 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23205?

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-2021-23205?

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

Scan your code now

Source: NVD / NIST