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CVE-2021-23146

24
FAUCET Score

CVE-2021-23146 describes an Incomplete Comparison with Missing Factors vulnerability in the Gallagher Controller, allowing attackers to bypass PIV verification. This affects multiple versions of Gallagher Command Centre, including 8.40 prior to 8.40.1888, 8.30 prior to 8.30.1359, 8.20 prior to 8.20.1259, 8.10 prior to 8.10.1284, and all 8.00 and prior versions. With a CVSS score of 7.5 (HIGH), the vulnerability is network-exploitable with low attack complexity, leading to high integrity impact without requiring user interaction. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.00CPE matchmatch criteria
cpe:2.3:a:gallagher:command_centre:*:*:*:*:*:*:*:*
>= 8.10, < 8.10.1284CPE matchmatch criteria
cpe:2.3:a:gallagher:command_centre:*:*:*:*:*:*:*:*
>= 8.20, < 8.20.1259CPE matchmatch criteria
cpe:2.3:a:gallagher:command_centre:*:*:*:*:*:*:*:*
>= 8.30, < 8.30.1359CPE matchmatch criteria
cpe:2.3:a:gallagher:command_centre:*:*:*:*:*:*:*:*
>= 8.40, < 8.40.1888CPE matchmatch criteria
cpe:2.3:a:gallagher:command_centre:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 29th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

security.gallagher.com / Security-Advisories/CVE-2021-23146
Vendor Advisory