CVE-2021-23204

Name: CVE-2021-23204
Creator: NVD / NIST
Published: 2021-06-11T16:15:12.177+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2021-23204 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Gallagher Command Centre Server allows OSDP key material to be exposed to Command Centre Operators. This issue affects: Gallagher Command Centre 8.40 versions prior to 8.40.1888 (MR3); 8.30 versions prior to 8.30.1359 (MR3).. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Gallagher Command Centre Server allows OSDP key material to be exposed to Command Centre Operators. This issue affects: Gallagher Command Centre 8.40 versions prior to 8.40.1888 (MR3); 8.30 versions prior to 8.30.1359 (MR3).

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.70%

48.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

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

References

https://security.gallagher.com/Security-Advisories/CVE-2021-23204Vendor Advisory
https://security.gallagher.com/Security-Advisories/CVE-2021-23204Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-23204?

How severe is CVE-2021-23204?

CVE-2021-23204 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23204?

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-2021-23204?

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

Scan your code now

Source: NVD / NIST