Security readout for executives and security teams
Plain-English summary
Dell CloudBoost Virtual Appliance before 19.14.0.0 stores passwords in plaintext. If an attacker can remotely reach the appliance and meet the required privilege or access conditions, they may elevate privileges. This is a high-severity issue, but public sources do not indicate active exploitation.
Executive priority
Prioritize remediation for internet-reachable or broadly accessible CloudBoost appliances. Treat this as a high-priority maintenance item because stored passwords can amplify impact, but current public evidence does not support emergency treatment based on active exploitation.
Technical view
CVE-2026-21417 is CWE-256 in Dell CloudBoost Virtual Appliance versions prior to 19.14.0.0. Dell/NVD-style metadata lists CVSS 3.1 score 7.0, AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H. The description says a high-privileged remote attacker could exploit it for privilege elevation, which conflicts with PR:N in the vector.
Likely exposure
Organizations running Dell CloudBoost Virtual Appliance versions earlier than 19.14.0.0 are potentially exposed, especially where management or appliance interfaces are remotely reachable. The source bundle lists default status as unaffected but names pre-19.14.0.0 versions as vulnerable, so asset-version validation is important.
Exploitation context
No CISA KEV listing or cited source indicates active exploitation. The public description does not provide exploit details. Attack feasibility appears constrained by high attack complexity and the stated need for privileged remote access, though the CVSS vector says no privileges required.
Researcher notes
Public data is limited to the CVE record and Dell advisory reference. The vulnerability description and CVSS vector appear inconsistent on required privileges. Avoid assuming exploitability beyond the published text. Confirm affected builds and remediation details directly from Dell advisory DSA-2026-025.
Mitigation direction
- Upgrade Dell CloudBoost Virtual Appliance to 19.14.0.0 or later per Dell advisory.
- Review Dell advisory DSA-2026-025 for complete remediation instructions.
- Limit remote access to CloudBoost management interfaces to trusted administrative networks.
- Rotate passwords if plaintext exposure is suspected in your environment.
Validation and detection
- Inventory all Dell CloudBoost Virtual Appliance instances.
- Confirm each appliance version is 19.14.0.0 or later.
- Check whether CloudBoost interfaces are reachable from untrusted networks.
- Review administrative access logs for unusual privilege changes or authentication activity.
- Document any compensating controls if immediate upgrade is not possible.
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-256: 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-2026-21417 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
- 7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/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:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H2.24.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/kbdoc/en-us/000419894/dsa-2026-025-security-update-for-dell-cloudboost-virtual-appliance-multiple-vulnerabilitiesCVE reference · vendor-advisory
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.
Plaintext Storage of a Password
Plaintext Storage of a Password represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.