CVE-2021-23146

Name: CVE-2021-23146
Creator: NVD / NIST
Published: 2021-11-18T18:15:07.73+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2021-23146 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An Incomplete Comparison with Missing Factors vulnerability in the Gallagher Controller allows an attacker to bypass PIV verification. 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); 8.10 versions prior to 8.10.1284 (MR7); version 8.00 and prior versions.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

An Incomplete Comparison with Missing Factors vulnerability in the Gallagher Controller allows an attacker to bypass PIV verification. 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); 8.10 versions prior to 8.10.1284 (MR7); version 8.00 and prior versions.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.85%

53.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gallagher	Command Centre	<= 8.00
Gallagher	Command Centre	>= 8.10, < 8.10.1284
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-2021-23146Vendor Advisory
https://security.gallagher.com/Security-Advisories/CVE-2021-23146Vendor Advisory

Timeline

Published: Nov 18, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23146?

How severe is CVE-2021-23146?

CVE-2021-23146 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23146?

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-2021-23146?

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

Scan your code now

Source: NVD / NIST