CVE-2019-3598
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 · uneditedBuffer Access with Incorrect Length Value in McAfee Agent (MA) 5.x allows remote unauthenticated users to potentially cause a denial of service via specifically crafted UDP 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 confidenceMcAfee Agent 5.x contains a buffer access vulnerability where the software uses an incorrect length value when processing incoming UDP packets. This allows remote unauthenticated attackers to send specifically crafted UDP packets to potentially cause a denial of service condition.
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>= 5.0.0, <= 5.0.6>= 5.5.0, <= 5.5.2= 5.6.0CVSS 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
- Low
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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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Confirm McAfee Agent is installedCheck for McAfee Agent installation directory or look for the cmdagent process runningAffected if McAfee Agent is installed on the system
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Identify installed McAfee Agent versionUse the cmdagent -version command or check the version via the Windows Registry (HKLM\SOFTWARE\McAfee\Agent) or Linux equivalentAffected if Version is 5.0.0 through 5.0.6, 5.5.0 through 5.5.2, or exactly 5.6.0
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Verify UDP listener is enabledCheck if the McAfee Agent service is running and listening on UDP port 5555 (default McAfee Agent communication port) using netstat -an | findstr 5555 or equivalentAffected if The UDP listener is active and accepting connections on the default or configured UDP port
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Confirm UDP processing is activeVerify that the McAfee Agent framework is operational and able to receive UDP packets (typically indicated by the cmdagent process being alive and network binding present)Affected if The Agent is running and has UDP network bindings exposed
A system is affected if McAfee Agent version 5.0.0-5.0.6, 5.5.0-5.5.2, or 5.6.0 is installed and the UDP listener is active and exposed on the network.
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 dataApply the vendor-supplied patch or update McAfee Agent to a version that addresses this vulnerability. Additionally, consider implementing network-level filtering to restrict unauthorized UDP traffic to systems running the McAfee Agent.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-3598 — 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-2019-3598 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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