Security readout for executives and security teams
Plain-English summary
CVE-2020-3389 affects Cisco HyperFlex HX-Series software. A highly privileged local user could recover an installation-time password because sensitive data was stored in clear text. This is not a remote takeover issue, but it matters where HyperFlex hosts sensitive workloads or where administrator access is shared broadly.
Executive priority
Treat as a targeted credential exposure risk, not an emergency internet-wide issue. Prioritize if HyperFlex supports critical workloads, privileged access is broadly shared, or installation credentials may unlock other systems.
Technical view
The flaw is in the Cisco HyperFlex HX-Series installation component. The CVSS 3.0 vector is AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N, scoring 4.4. Successful exploitation requires local authenticated access with high privileges and exposes confidential installation credentials without affecting integrity or availability.
Likely exposure
Exposure is limited to organizations running Cisco HyperFlex HX Data Platform. The source bundle does not identify affected or fixed versions, so teams need asset inventory and Cisco advisory review to determine whether deployed clusters are in scope.
Exploitation context
The bundle states exploitation requires an authenticated local attacker with high privileges. It is not listed as CISA KEV, and the provided sources do not claim active exploitation or public exploitation activity.
Researcher notes
Evidence supports cleartext storage of sensitive installation information and high-confidentiality impact. The bundle lacks affected version ranges, fixed releases, and detailed mitigation text, so validation should stay tied to Cisco’s advisory and local asset data.
Mitigation direction
- Review Cisco advisory for affected and fixed HyperFlex releases.
- Inventory Cisco HyperFlex HX Data Platform deployments.
- Restrict privileged local access to HyperFlex systems.
- Rotate exposed installation-time credentials if Cisco guidance indicates risk.
- Monitor administrative access until remediation is confirmed.
Validation and detection
- Confirm whether Cisco HyperFlex HX Data Platform is deployed.
- Map deployed versions against Cisco advisory guidance.
- Review privileged local account membership on affected systems.
- Check logs for unexpected authenticated local administrative access.
- Document whether credential rotation is required after remediation.
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
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CWE-310: 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-2020-3389 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
- Medium
- CVSS
- 4.4 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
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:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N0.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.4MediumVector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20200819 Cisco Hyperflex HX-Series Software Weak Storage VulnerabilityCVE reference · vendor-advisory, x_refsource_CISCO
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.
Cryptographic Issues
Cryptographic Issues represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.