CVE-2014-5409
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 · uneditedThe 17046 Ethernet card before 94450214LFMT100SEM-L.R3-CL for the GE Digital Energy Hydran M2 does not properly generate random values for TCP Initial Sequence Numbers (ISNs), which makes it easier for remote attackers to spoof packets by predicting these values.
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 17046 Ethernet card used in GE Digital Energy Hydran M2 devices uses a weak TCP Initial Sequence Number (ISN) generation algorithm. The ISN values are predictable rather than cryptographically random, allowing remote attackers to calculate valid sequence numbers and spoof TCP packets. This enables session hijacking, man-in-the-middle attacks, and injection of malicious traffic into established connections.
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 dataall versionsCVSS 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
- None
- Availability
- None
AV:N/AC:L/Au:N/C:P/I:N/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 the GE Hydran M2 deviceLocate the physical device or check network inventory for GE Digital Energy Hydran M2 equipment. Verify the model number on the device chassis or in asset documentation.Affected if The target system is a GE Hydran M2 device
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Locate the 17046 Ethernet cardOpen the Hydran M2 device chassis and identify the 17046 Ethernet card module, or check the hardware inventory/CMDB for the 17046 card installed in the device.Affected if The 17046 Ethernet card is present in the Hydran M2 device
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Determine the 17046 Ethernet card firmware versionAccess the device management interface or console. Use the appropriate command or menu to query the firmware version of the 17046 Ethernet card. Consult device documentation for the specific command (such as 'show version' or similar).Affected if The firmware version cannot be determined or is earlier than 94450214LFMT100SEM-L.R3-CL
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Compare firmware version to patched releaseIf a firmware version is obtained, compare it against the patched version 94450214LFMT100SEM-L.R3-CL. Versions below this are considered vulnerable.Affected if The installed firmware version is older than 94450214LFMT100SEM-L.R3-CL or the version cannot be verified
If the device is a GE Hydran M2 with a 17046 Ethernet card and the firmware version is either unknown or below 94450214LFMT100SEM-L.R3-CL, the environment is affected by this CVE.
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 dataUpdate the 17046 Ethernet card firmware to version 94450214LFMT100SEM-L.R3-CL or later, which implements proper randomized ISN generation. If firmware updates are not immediately feasible, enforce strict network segmentation using firewalls to limit exposure to untrusted networks and monitor for anomalous TCP patterns.
- Consultation2.0 h
- Implementation3.0 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-2014-5409 — 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-2014-5409 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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