Security readout for executives and security teams
Plain-English summary
Dell Peripheral Manager has a local privilege escalation flaw. A user who already has local access could potentially run arbitrary code with system-level privileges. This is not a remote internet bug, but it matters on managed endpoints because compromise of one user account could become full control of that device.
Executive priority
Treat this as a high-priority endpoint hygiene issue, especially where Dell Peripheral Manager is broadly deployed. It is less urgent than a remotely exploitable internet-facing vulnerability, but it can materially increase impact after initial workstation compromise.
Technical view
CVE-2021-21545 is a CWE-427 uncontrolled search path issue in Dell Peripheral Manager. The CVSS 3.1 score is 7.8: local attack vector, low complexity, low privileges required, no user interaction, and high confidentiality, integrity, and availability impact. Dell identifies version 1.3.1 or greater as containing remediation.
Likely exposure
Exposure is most likely on Windows endpoints with Dell Peripheral Manager installed where the installed version is older than, or cannot be verified as, 1.3.1 or later. The provided sources do not specify a complete affected version range.
Exploitation context
The provided bundle does not show CISA KEV status or other evidence of active exploitation. Exploitation requires local access and low privileges, then could escalate to arbitrary code execution with system-user privileges.
Researcher notes
The source data identifies CWE-427 and CVSS details but does not provide exploit mechanics, affected version boundaries, or telemetry indicators. Avoid assuming exploitability beyond local low-privilege escalation and validate against Dell’s advisory and installed product versions.
Mitigation direction
- Inventory endpoints running Dell Peripheral Manager.
- Update Dell Peripheral Manager to version 1.3.1 or later.
- Prioritize shared, kiosk, helpdesk, and high-value administrative workstations.
- Check Dell’s advisory for any environment-specific guidance.
- Restrict unnecessary local user access on affected endpoints.
Validation and detection
- Confirm Dell Peripheral Manager is installed on sampled endpoints.
- Record installed versions and compare against 1.3.1 or later.
- Validate software inventory coverage for Dell-managed peripherals.
- Review endpoint telemetry for unexpected privileged process activity.
- Document any systems that cannot be upgraded immediately.
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-427: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-21545 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
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.
Uncontrolled Search Path Element
Uncontrolled Search Path Element represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.