CVE-2006-6489
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 SISCO OSI stack, as used in SISCO MMS-EASE, ICCP Toolkit for MMS-EASE, AX-S4 MMS and AX-S4 ICCP, and possibly other control system applications, allows remote attackers to cause a denial of service (application termination and restart) via malformed packets.
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 confidenceThe SISCO OSI stack, used in industrial control applications including MMS-EASE and AX-S4, improperly handles malformed network packets. When specially crafted packets are received, the application terminates and automatically restarts, causing denial of service.
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= 3.0103= 3.0155= 5.01= 5.02= 4.10_for_mms-ease= 5.03_for_mms-ease= 3= 7.10= 8.03CVSS 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
- None
- Integrity
- None
- Availability
- Partial
AV:N/AC:L/Au:N/C:N/I:N/A:P
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 installed SISCO OSI stack productsReview system inventory, installed software lists, or check for binaries related to MMS-EASE, AX-S4, ICCP Toolkit, or ISO Stack. Look in common installation directories for industrial control software.Affected if Any of the following products are installed: Sisco Ax S4 Iccp, Sisco Ax S4 Mms, Sisco Iccp Toolkit, Sisco Iso Stack, or Sisco Mms Ease
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Determine product versionUse the product's built-in version command, check the executable file properties, or consult the software's about/ license information. Compare against the affected versions: Ax S4 Iccp (3.0103, 3.0155), Ax S4 Mms (5.01, 5.02), ICCP Toolkit (4.10_for_mms-ease, 5.03_for_mms-ease), Iso Stack (3), Mms Ease (7.10, 8.03).Affected if The installed version matches exactly one of the affected versions listed in this CVE
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Verify the service is running and network-exposedCheck if the SISCO application process is running and listening on network ports. Use commands like netstat or process inspection tools to identify listening services.Affected if The SISCO product is running and accepting network connections on any port
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Confirm the network interface is accessibleVerify that the network interface(s) where the SISCO stack receives packets is reachable from external sources. Check firewall rules and network segmentation status.Affected if The affected product's network interface is accessible to untrusted networks or external systems
You are affected if any SISCO OSI stack product (MMS-EASE, AX-S4, ICCP Toolkit, ISO Stack) with a version matching 3.0103, 3.0155, 5.01, 5.02, 4.10_for_mms-ease, 5.03_for_mms-ease, 3, 7.10, or 8.03 is running and network-accessible, as malformed packets could trigger the denial-of-service condition.
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 dataImplement network segmentation to limit exposure of affected control system devices, and apply any available vendor patches. If no patch exists, consider deploying intrusion detection/prevention systems to identify and block malformed packets.
- Consultation8.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2006-6489 — 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-2006-6489 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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