Security readout for executives and security teams
Plain-English summary
CVE-2021-21533 is a denial-of-service issue in Dell Wyse Management Suite up to version 3.2. An authenticated malicious user could disrupt the job status retrieval page, affecting other users who should see the same job details. The disclosed impact is availability only, not data theft or system takeover.
Executive priority
Treat this as a moderate operational-risk item. It is not described as data compromise, but it can disrupt management visibility for Wyse operations. Remediate through Dell’s advisory, especially in environments where Wyse Management Suite supports production endpoint administration.
Technical view
The vulnerability is CWE-20 improper input validation in Wyse Management Suite job status retrieval. CVSS 3.1 is 4.3: network reachable, low complexity, low privileges required, no user interaction, unchanged scope, and low availability impact only. The source bundle does not identify CPEs or detailed vulnerable build ranges beyond up to 3.2.
Likely exposure
Exposure is most likely where Dell Wyse Management Suite up to 3.2 is deployed and reachable by authenticated users. Risk increases when many administrators or operators have access to job details. The bundle does not establish internet exposure or unauthenticated impact.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires an authenticated malicious user with network access to Wyse Management Suite. Impact is limited to denial of service on the job status retrieval page and related user access to the same job detail subset.
Researcher notes
Evidence is limited to the CVE record, CVSS vector, CWE-20, and Dell advisory reference. Do not assume broader product impact, unauthenticated reachability, or exploit availability. Focus validation on authenticated access paths to the job status retrieval page and version exposure up to 3.2.
Mitigation direction
- Identify all Dell Wyse Management Suite deployments and versions.
- Review Dell DSA-2021-070 and apply the vendor security update guidance.
- Restrict Wyse Management Suite access to trusted authenticated users only.
- Monitor job status retrieval errors or repeated availability failures.
- Prioritize remediation where WMS supports endpoint operations at scale.
Validation and detection
- Confirm whether deployed Wyse Management Suite versions are up to 3.2.
- Verify who has authenticated access to job status retrieval features.
- Check logs and support tickets for job status page disruption patterns.
- Confirm remediation status against Dell DSA-2021-070 guidance.
- Perform controlled functional checks after updating to confirm page availability.
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
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ATT&CK lookup starting points
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CWE-20: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-21533 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
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:L/PR:L/UI:N/S:U/C:N/I:N/A:L2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/kbdoc/en-us/000184666/dsa-2021-070-dell-wyse-management-suite-security-update-for-multiple-vulnerabilitiesCVE reference · x_refsource_MISC
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.