CVE-2019-8917
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 · uneditedSolarWinds Orion NPM before 12.4 suffers from a SYSTEM remote code execution vulnerability in the OrionModuleEngine service. This service establishes a NetTcpBinding endpoint that allows remote, unauthenticated clients to connect and call publicly exposed methods. The InvokeActionMethod method may be abused by an attacker to execute commands as the SYSTEM user.
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 confidenceSolarWinds Orion NPM before 12.4 contains a critical remote code execution vulnerability in the OrionModuleEngine service. The service exposes a NetTcpBinding endpoint that accepts remote, unauthenticated connections and exposes the InvokeActionMethod method, which attackers can abuse to execute arbitrary commands with SYSTEM-level privileges.
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< 12.4CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/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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Check installed SolarWinds Orion NPM versionAccess the Orion web interface and navigate to the About or Help section to view the version number, or check the Windows Programs and Features list for the installed Orion NPM version.Affected if The installed version is any version prior to 12.4 (for example, 12.3, 12.3.1, 12.2, etc.)
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Verify OrionModuleEngine service is presentOpen Windows Services (services.msc) and locate the SolarWinds OrionModuleEngine service, or run 'Get-Service' PowerShell command to list services containing 'OrionModuleEngine'.Affected if The OrionModuleEngine service exists and is running on the system.
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Confirm NetTcpBinding endpoint is configuredExamine the OrionModuleEngine configuration files (typically the web.config or app.config for the service) for NetTcpBinding endpoint definitions, or use a WCF diagnostic tool to enumerate active endpoints.Affected if The service exposes a NetTcpBinding endpoint that accepts remote connections.
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Assess network accessibility of the OrionModuleEngine serviceUse netstat or a similar tool to check for listening TCP ports associated with the OrionModuleEngine service, and verify whether these ports are bound to external IP addresses or are accessible from untrusted networks.Affected if The OrionModuleEngine NetTcpBinding endpoint is listening on a port accessible from untrusted network segments.
You are affected if your SolarWinds Orion NPM version is before 12.4 AND the OrionModuleEngine service with its NetTcpBinding endpoint is running and network-accessible.
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.
dbcve · scoped12.4
Upgrade SolarWinds Orion NPM to version 12.4 or later. Additionally, restrict network access to the OrionModuleEngine service by placing it behind a firewall or VPN, and disable the NetTcpBinding endpoint if not required for business operations.
Orion NPM 12.4 or later (recommended: latest stable release)
- Backup the current Orion NPM database and configuration
- Download SolarWinds Orion NPM version 12.4 or later from the official SolarWinds customer portal
- Stop all SolarWinds services on the server running Orion NPM
- Run the installer for version 12.4 or later
- Follow the upgrade wizard prompts, ensuring the upgrade option is selected rather than a fresh install
- Allow the upgrade to complete and verify all services start successfully
- Confirm the OrionModuleEngine service is running and verify the NetTcpBinding endpoint is no longer exposed to unauthenticated remote access
- After upgrade, apply any subsequent hotfixes or security patches released after 12.4
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA6.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-8917 — 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-2019-8917 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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