CVE-2021-23204Network attack vector

OSDP key disclosure to authenticated operators

Published Jun 11, 2021 · Updated Aug 3, 2024

Information exposure in Gallagher Command Centre allows remote authenticated users to obtain OSDP keys from affected 8.30 and 8.40 releases. Gallagher Security has not published the code locus or operation that makes the key material accessible to Command Centre Operators. Command Centre Operator access and OSDP readers are required, and the disclosed consequence is possession of that key material.

CVSS severity8.1
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Gallagher Command Centre allows remote authenticated users to obtain OSDP keys from affected 8.30 and 8.40 releases. Gallagher Security has not published the code locus or operation that makes the key material accessible to Command Centre Operators. Command Centre Operator access and OSDP readers are required, and the disclosed consequence is possession of that key material.

The record

CVE
CVE-2021-23204
Published
Jun 11, 2021
Updated
Aug 3, 2024
Vendor
Gallagher Security
Product
Command Centre
Classifications
CWE-862, CWE-200, T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=8.30 <8.30.1359 (MR3)
  2. Affected versionversion=8.40 <8.40.1888 (MR3)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gallagher Security · Command Centreversion=8.30 <8.30.1359 (MR3); version=8.40 <8.40.1888 (MR3)

Published CVSS scores

8.1Gallagher Group Ltd.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552Unsecured Credentials

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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