CVE-2019-3766
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 · uneditedDell EMC ECS versions prior to 3.4.0.0 contain an improper restriction of excessive authentication attempts vulnerability. An unauthenticated remote attacker may potentially perform a password brute-force attack to gain access to the targeted accounts.
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 confidenceDell EMC ECS versions prior to 3.4.0.0 fail to restrict excessive authentication attempts, allowing unauthenticated remote attackers to perform unlimited password brute-force attacks against targeted user accounts.
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< 3.4.0.0CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 Dell EMC ECS installationConfirm whether your environment includes Dell EMC Elastic Cloud Storage product. Check inventory systems, deployed software lists, or consult with infrastructure teams.Affected if Dell EMC ECS is not deployed in your environment, this CVE does not apply.
-
Determine ECS versionLocate the installed version of Dell EMC ECS. This is typically visible in the ECS management interface, system information, or via administrative CLI commands provided by Dell EMC documentation.Affected if The installed version cannot be determined or is confirmed to be below 3.4.0.0.
-
Compare version to affected rangeCompare your installed ECS version against the affected range: versions prior to 3.4.0.0. If your version starts with 3.4.x.x or higher, you are not in the affected range.Affected if Your installed version is 3.3.x.x or any version lower than 3.4.0.0.
-
Verify authentication controlsInspect whether your ECS deployment has external authentication controls such as account lockout policies, rate limiting, or network-level brute force protection enabled as compensating measures.Affected if No authentication attempt restrictions or rate limiting are configured, and the ECS version is below 3.4.0.0.
You are affected if Dell EMC ECS is present in your environment with a version lower than 3.4.0.0 and no compensating authentication controls are in place.
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.
dbcve · scoped3.4.0.0
Upgrade Dell EMC ECS to version 3.4.0.0 or later which contains the fix for proper authentication attempt restrictions, or implement account lockout and rate-limiting controls at the application or network level as a compensating control.
3.4.0.0
- 1. Identify current Dell EMC ECS version by checking the system management interface or running: /opt/emc/ecs/bin/emcctl -get version
- 2. Review Dell EMC ECS upgrade documentation and release notes for version 3.4.0.0
- 3. Plan and schedule the upgrade following Dell EMC standard upgrade procedures for ECS
- 4. Perform the upgrade to version 3.4.0.0 or later
- 5. Verify the upgrade was successful and confirm the new version is 3.4.0.0 or higher
- 6. Test authentication mechanisms to confirm the excessive authentication attempt restriction is now in place
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation6.0 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 $4,544.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-3766 — 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-2019-3766 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