CVE-2022-34100
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 · uneditedA vulnerability was discovered in the Crestron AirMedia Windows Application, version 4.3.1.39, in which a low-privileged user can gain a SYSTEM level command prompt by pre-staging a file structure prior to the installation of a trusted service executable and change permissions on that file structure during a repair operation.
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 · high confidenceA vulnerability in Crestron AirMedia Windows Application v4.3.1.39 allows a low-privileged local user to escalate to SYSTEM privileges by pre-staging a file structure prior to installation of a trusted service executable, then modifying permissions on that file structure during a repair operation.
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= 4.3.1.39CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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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Verify AirMedia application is installedCheck for Crestron AirMedia in the system registry under HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall or look for the installation folder in Program Files. Use 'Get-ItemProperty' or inspect Add/Remove Programs.Affected if Crestron AirMedia application version 4.3.1.39 is found on the system
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Confirm the exact installed versionLocate the AirMedia executable (commonly AirMedia.exe or similar in the installation directory) and check its file version property using PowerShell 'Get-Item' or by right-clicking the file to view Properties > Details.Affected if The file version reports exactly 4.3.1.39, matching the vulnerable release
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Identify the trusted service executableExamine the AirMedia installation directory for service-related executables (such as AMService.exe or similar) that are installed as a Windows service. Use 'Get-Service' cmdlet or check the service properties in services.msc.Affected if A service executable associated with AirMedia is present and runs under a privileged account (such as SYSTEM or LocalSystem)
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Check repair operation availabilityAttempt to locate the Windows Installer repair entry for AirMedia. In Add/Remove Programs, right-click AirMedia and select Repair, or use 'msiexec /f {product-code}' to test if a repair operation can be triggered by a low-privilege user.Affected if A repair operation can be initiated by a standard user without administrator elevation
A system is affected if Crestron AirMedia version 4.3.1.39 is installed and a low-privileged user can trigger a repair operation that allows file permission manipulation on service executables.
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 dataApply the vendor patch or update to Crestron AirMedia version 4.3.1.39 or later; until patched, restrict local user permissions and monitor for unauthorized repair operations on the system.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-34100 — 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-2022-34100 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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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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