Security readout for executives and security teams
Plain-English summary
Dell EMC Elastic Cloud Storage before version 3.4.0.0 may not sufficiently limit repeated login attempts. A remote unauthenticated attacker could try many passwords against targeted accounts, potentially leading to account compromise. The issue is high severity, but the supplied sources do not show active exploitation.
Executive priority
Treat as a high-priority infrastructure remediation if ECS is deployed. The business risk is unauthorized access to object storage services through account compromise. Prioritize patch verification and monitoring, but do not claim emergency active exploitation based on the supplied evidence.
Technical view
CVE-2019-3766 is a CWE-307 improper restriction of excessive authentication attempts flaw in Dell EMC ECS versions prior to 3.4.0.0. The CVSS 3.0 score is 8.1 with network attack vector and no privileges required, but high attack complexity. Successful compromise could affect confidentiality, integrity, and availability.
Likely exposure
Organizations running Dell EMC Elastic Cloud Storage versions earlier than 3.4.0.0 are in scope, especially where authentication endpoints are reachable by untrusted networks. The source bundle does not identify specific configurations, modules, or public exposure requirements beyond remote unauthenticated access.
Exploitation context
The described abuse is password brute forcing against targeted ECS accounts. CISA KEV status is false in the supplied data, and no cited source in the bundle claims active exploitation. Evidence is limited to public CVE and Dell advisory metadata.
Researcher notes
The public data is concise: affected product, version boundary, CWE-307, and CVSS vector are available. It does not describe exact endpoints, rate-limit behavior, exploit tooling, or vendor workarounds. Avoid assumptions beyond ECS versions prior to 3.4.0.0 and the brute-force impact statement.
Mitigation direction
- Upgrade Dell EMC ECS to version 3.4.0.0 or later following Dell guidance.
- Review Dell advisory DSA-2019-140 for deployment-specific remediation instructions.
- Prioritize accounts with privileged ECS access during remediation planning.
- If immediate upgrade is delayed, check vendor guidance for supported temporary controls.
Validation and detection
- Inventory Dell EMC ECS deployments and record running versions.
- Flag any ECS instance running a version earlier than 3.4.0.0.
- Review authentication logs for unusual repeated failed login attempts.
- Confirm remediation by verifying ECS reports version 3.4.0.0 or later.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-307: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-3766 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.1 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.1HighVector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/security/en-us/details/537465/DSA-2019-140-Dell-EMC-Elastic-Cloud-Storage-ECS-Improper-Restriction-of-Excessive-AuthenticatioCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Restriction of Excessive Authentication Attempts
Improper Restriction of Excessive Authentication Attempts represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.