CVE-2009-0209
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 · uneditedPI Server in OSIsoft PI System before 3.4.380.x does not properly use encryption in the default authentication process, which allows remote attackers to read or modify information in databases via unspecified vectors.
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 confidenceThe OSIsoft PI Server in PI System versions prior to 3.4.380.x has a vulnerability in its default authentication process that fails to properly implement encryption. This allows remote attackers to intercept or manipulate the authentication mechanism and potentially read or modify data in connected databases via unspecified vectors.
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<= 3.4.375.99= 2.4= 2.6= 3.4.363.97= 3.4.370= 3.4.375.99CVSS 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
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- None
AV:N/AC:L/Au:N/C:P/I:P/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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Check installed PI Server versionOpen PI System Management Tools (PISMT) or use the PI SDK to query the server version. In PI SMT, navigate to the server node and view properties. Alternatively, use the PI Backup Manager or check the PI Server installation directory for version information in the executable or release notes.Affected if The installed version is 2.4, 2.6, 3.4.363.97, 3.4.370, 3.4.375.99, or any version prior to 3.4.380.x
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Identify if default authentication is in useIn PI System Management Tools, navigate to PI Server | Security | User List. Check if the 'piadm' or default administrator accounts are enabled. Review whether Windows Authentication or PI Native authentication is configured as the primary method.Affected if PI Native authentication (piadm, pistart accounts) is enabled as the default authentication mechanism
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Verify authentication channel encryption settingsIn PI System Management Tools, go to PI Server | Security | Security Settings. Look for encryption or SSL/TLS configuration options for the PI Connectors or the PI Server network communications. Check if 'Require Encryption' or similar options are enabled for authentication traffic.Affected if Encryption is not enabled or is set to optional for PI Server authentication channels
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Check network exposure of PI Server portsReview firewall rules and network configuration to determine if PI Server ports (typically 5450, 5457, 5458 for PI Server communications) are exposed to untrusted networks or the internet. Use netstat or firewall logs to enumerate listening ports.Affected if PI Server authentication ports are accessible from untrusted network segments or external addresses
A system is affected if it runs PI Server version 2.4, 2.6, 3.4.363.97, 3.4.370, 3.4.375.99, or any version prior to 3.4.380.x with default unencrypted authentication enabled and exposed to network access.
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 dataUpgrade PI System to version 3.4.380.x or later where proper encryption in authentication is implemented. If immediate upgrade is not feasible, implement network segmentation, VPN access controls, or additional perimeter security to limit exposure to the unauthenticated channel.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2009-0209 — 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-2009-0209 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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