CVE-2022-38100
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 CMS800 device fails while attempting to parse malformed network data sent by a threat actor. A threat actor with network access can remotely issue a specially formatted UDP request that will cause the entire device to crash and require a physical reboot. A UDP broadcast request could be sent that causes a mass denial-of-service attack on all CME8000 devices connected to the same network.
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 CMS800/CME8000 device contains a vulnerability in its UDP packet parsing logic. A remote attacker with network access can send specially crafted malformed UDP packets that cause the device to crash. The vulnerability can be exploited via UDP broadcast, enabling a mass DoS against all vulnerable devices on the same network segment.
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
- 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.
-
Identify CMS800/CME8000 devices on your networkReview your network inventory or use network scanning tools to identify devices with product name, model, or hostname matching 'CMS800', 'CME8000', or 'Contechealth'. Check device labels, management interfaces, or DHCP lease records for these model identifiers.Affected if Any device matching CMS800 or CME8000 model is present on the network
-
Confirm UDP services are exposedUse network scanning (such as nmap) to scan for open UDP ports on CMS800/CME8000 devices. UDP services are typically discovered with -sU flag. Document which UDP ports are accessible from your network segments.Affected if Any UDP port on the CMS800/CME8000 device is reachable from an untrusted network segment
-
Verify network segment accessibilityExamine your network architecture to determine if the CMS800/CME8000 devices share network segments with untrusted or guest users. Check if UDP broadcast traffic can reach these devices from other VLANs or subnets.Affected if CMS800/CME8000 devices are on the same broadcast domain as untrusted systems or can be reached via UDP broadcast from other segments
-
Check if firmware is from an external sourceReview your asset management records or device firmware metadata to determine if this is a Contechealth CMS8000 device. All versions of Contechealth Cms8000 Firmware are affected according to the vulnerability data.Affected if The device runs Contechealth Cms8000 Firmware of any version
Your environment is affected if you have any CMS800 or CME8000 devices with accessible UDP services on your network, regardless of firmware version.
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 dataIsolate CMS800 devices on a restricted network segment and configure firewall rules to block unauthorized UDP traffic destined for these devices. If available, apply vendor-supplied firmware updates that address the parsing vulnerability.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-38100 — 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-2022-38100 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data