CVE-2021-23146

Q: How do I fix CVE-2021-23146?

Upgrade command centre to 8.40.1888 or later.

Q: Is CVE-2021-23146 being actively exploited?

Not that we know of. CVE-2021-23146 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.85% is the estimated probability that it will be exploited in the next 30 days. That is higher than 55% of all scored CVEs.

Q: How severe is CVE-2021-23146?

CVE-2021-23146 has a CVSS v3 base score of 7.1, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2021-23146 affect?

Published advisories record a fix for command centre (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGH

7.1

CVSS v3

NVD

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.

CWE-1023 CWE-697

How to fix

Remediation Available

command centreNVD

Affected:>= 8.40, < 8.40.1888Fixed in:8.40.1888CVE-2021-23146derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityLow

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

Exploit Intelligence

0.85%probability of exploitation in 30 days

55thpercentile

Moderate risk: more likely to be exploited than 55% of all known CVEs.

References

Vendor Advisory1

security.gallagher.com

Related Vulnerabilities

Other CWE-1023 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2026-7473	Medium	5.8	1.1%	KEV	-
CVE-2025-55333	High	6.1	0.8%	-	Fix
CVE-2026-4599	Critical	9.1	0.5%	-	Fix
CVE-2024-5528	Low	3.5	0.4%	-	Fix
CVE-2026-24255	High	7.5	0.4%	-	-
CVE-2026-48587	Low	3.1	0.4%	-	Fix

Common questions

How do I fix CVE-2021-23146?

Upgrade command centre to 8.40.1888 or later.

Is CVE-2021-23146 being actively exploited?

Not that we know of. CVE-2021-23146 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.85% is the estimated probability that it will be exploited in the next 30 days. That is higher than 55% of all scored CVEs.

How severe is CVE-2021-23146?

CVE-2021-23146 has a CVSS v3 base score of 7.1, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-23146 affect?

Published advisories record a fix for command centre (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2021-23146

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.