CVE-2020-7486
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 · unedited**VERSION NOT SUPPORTED WHEN ASSIGNED** A vulnerability could cause TCM modules to reset when under high network load in TCM v10.4.x and in system v10.3.x. This vulnerability was discovered and remediated in version v10.5.x on August 13, 2009. TCMs from v10.5.x and on will no longer exhibit this behavior.
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 confidenceA vulnerability in TCM (Telecommunications Control Module) versions 10.3.x and 10.4.x allows the modules to reset under high network load conditions, causing denial of service. The vulnerability was fixed in version 10.5.x released in August 2009, which prevents the reset behavior.
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= 10.3.x= 10.4.x= 10.3.x= 10.4.x= 10.3.x= 10.4.x= 10.3.x= 10.4.x= 10.3.x= 10.4.x= 10.3.x= 10.4.xCVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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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Identify TCM model in useLocate the TCM module physically or check system inventory documentation for the Tricon system to identify if one of these models is present: TCM 4351, TCM 4352, TCM 4351a, TCM 4351b, TCM 4352a, or TCM 4352bAffected if The system contains any of the listed TCM models
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Check TCM firmware versionAccess the TCM module through its management interface or check system diagnostics to retrieve the installed firmware version numberAffected if The firmware version starts with 10.3.x or 10.4.x (for example, 10.3.0 through 10.3.9, or 10.4.0 through 10.4.9)
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Verify high network load conditionsReview network traffic logs or system event logs for indicators of high network load or module reset events occurring under heavy trafficAffected if Module resets are logged during periods of elevated network traffic
You are affected if your Tricon system uses any of the listed TCM models with firmware version 10.3.x or 10.4.x and you observe unexplained resets under high network load.
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 TCM modules from v10.3.x/v10.4.x to v10.5.x or later to eliminate the reset vulnerability under high network load.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-7486 — 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-2020-7486 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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