CVE-2021-23146

PIV verification bypass via incomplete credential comparison

Published Nov 18, 2021 · Updated Sep 17, 2024

Incomplete comparison in Gallagher Controller for affected Command Centre 8.x releases allows attackers to bypass PIV verification. The Controller's PIV verification compares credential data without all required factors; Gallagher has not disclosed the omitted factors or code path. Affected releases are 8.00 and earlier, 8.10 before 8.10.1284, 8.20 before 8.20.1259, 8.30 before 8.30.1359, and 8.40 before 8.40.1888; adjacent unauthenticated access to a Controller using PIV is required, and the bounded consequence is acceptance without complete verification.

CVSS severity7.1
High
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incomplete comparison in Gallagher Controller for affected Command Centre 8.x releases allows attackers to bypass PIV verification. The Controller's PIV verification compares credential data without all required factors; Gallagher has not disclosed the omitted factors or code path. Affected releases are 8.00 and earlier, 8.10 before 8.10.1284, 8.20 before 8.20.1259, 8.30 before 8.30.1359, and 8.40 before 8.40.1888; adjacent unauthenticated access to a Controller using PIV is required, and the bounded consequence is acceptance without complete verification.

The record

CVE
CVE-2021-23146
Published
Nov 18, 2021
Updated
Sep 17, 2024
Vendor
Gallagher Security
Product
Command Centre
Classifications
CWE-1023
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 18, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.00 and prior
  2. Affected versionversion=8.10 prior to 8.10.1284 (MR7)
  3. Affected versionversion=8.20 prior to 8.20.1259 (MR5)
  4. Affected versionversion=8.30 prior to 8.30.1359 (MR3)
  5. Affected versionversion=8.40 prior to 8.40.1888 (MR3)

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Gallagher Security · Command Centreversion=8.00 and prior; version=8.10 prior to 8.10.1284 (MR7); version=8.20 prior to 8.20.1259 (MR5); version=8.30 prior to 8.30.1359 (MR3); version=8.40 prior to 8.40.1888 (MR3)

Published CVSS scores

7.1GallagherCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1023Incomplete Comparison with Missing Factors

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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