CVE-2023-23576

Prolonged physical access via misordered competency checks

Published Dec 18, 2023 · Updated Aug 2, 2024

Incorrect behavior order in Gallagher Command Centre Server allows privileged users to retain physical site access after a network outage. During recovery, the server orders competency-dependent access decisions incorrectly, preserving physical access longer than intended. Only sites using Competencies are exposed; affected releases are 8.50 and earlier and branch builds before 8.60.2550, 8.70.2375, 8.80.1369, and 8.90.1620.

CVSS severity4.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect behavior order in Gallagher Command Centre Server allows privileged users to retain physical site access after a network outage. During recovery, the server orders competency-dependent access decisions incorrectly, preserving physical access longer than intended. Only sites using Competencies are exposed; affected releases are 8.50 and earlier and branch builds before 8.60.2550, 8.70.2375, 8.80.1369, and 8.90.1620.

The record

CVE
CVE-2023-23576
Published
Dec 18, 2023
Updated
Aug 2, 2024
Vendor
Gallagher Security
Product
Command Centre
Classifications
CWE-696
Attack vector
physical
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=0 <=8.50
  2. Affected versionversion=8.60 <8.60.2550 (MR7)
  3. Affected versionversion=8.70 <8.70.2375 (MR5)
  4. Affected versionversion=8.80 <8.80.1369 (MR3)
  5. Affected versionversion=8.90 <8.90.1620 (MR2)

What conditions does exploitation require?

Attack vectorphysical
Required privilegesauthenticated

What is affected?

Gallagher Security · Command Centreversion=0 <=8.50; version=8.60 <8.60.2550 (MR7); version=8.70 <8.70.2375 (MR5); version=8.80 <8.80.1369 (MR3); version=8.90 <8.90.1620 (MR2)

Published CVSS scores

4.3Gallagher Group Ltd.CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-696Incorrect Behavior Order

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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