CVE-2021-23136
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedImproper Authorization vulnerability in Gallagher Command Centre Server allows macro overrides to be performed by an unprivileged Command Centre Operator. 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); version 8.10 and prior versions.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceAn improper authorization vulnerability in Gallagher Command Centre Server allows unprivileged Command Centre Operators to perform macro overrides that should require higher privileges. This is a privilege escalation issue where the authorization mechanism fails to properly restrict macro override functionality to authorized administrative roles.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 8.10>= 8.20, < 8.20.1259>= 8.30, < 8.30.1359>= 8.40, < 8.40.1888CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Command Centre installation and versionLocate the Gallagher Command Centre Server installation and determine the installed version number. This is typically found in the application itself under 'Help > About' or in the server's program information.Affected if The installed version falls within any of these ranges: <= 8.10, >= 8.20 and < 8.20.1259, >= 8.30 and < 8.30.1359, or >= 8.40 and < 8.40.1888
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Verify macro override feature is configuredAccess the Command Centre administrative interface and check whether macro override functionality is enabled. This is typically found in the system configuration or operator settings area.Affected if Macro override functionality is enabled and accessible within the Command Centre environment
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Review operator role assignmentsExamine the operator user accounts in Command Centre to identify any users assigned the 'Operator' role (non-administrative role) versus administrative roles.Affected if There are operator-level users (non-administrative) configured in the system who have access to macro override capabilities
A user is affected if they are running a Command Centre version within the affected ranges listed above AND have macro override functionality enabled with operator-level accounts present in the system.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor data8.20.12598.30.13598.40.1888
Apply the vendor-supplied patches: upgrade to Command Centre 8.40.1888 (MR3) or later, 8.30.1359 (MR3) or later, or 8.20.1259 (MR5) or later. For versions 8.10 and prior, upgrade to a supported version.
- Consultation4.0 h
- Implementation6.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-23136 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-23136 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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