Security readout for executives and security teams
Plain-English summary
Dell EMC CloudLink 7.1 and earlier has a buffer overflow that a low-privileged local user could trigger to crash the application. The published impact is availability only, not data theft or privilege escalation. Treat this as operational reliability risk for environments using CloudLink.
Executive priority
Address during normal vulnerability management unless CloudLink supports critical operations or untrusted local users have access. Escalate if crashes could disrupt encryption, key management, or dependent workloads.
Technical view
CVE-2021-36333 is a CWE-120 buffer overflow in Dell EMC CloudLink 7.1 and all prior versions. CVSS 3.1 is 5.5: local attack vector, low complexity, low privileges, no user interaction, unchanged scope, and high availability impact only.
Likely exposure
Exposure is limited to Dell EMC CloudLink deployments running version 7.1 or earlier, especially where low-privileged local accounts exist on the host. The source bundle does not identify affected components, platforms, or exact fixed versions.
Exploitation context
The CVE is not listed as KEV in the provided bundle. The cited information does not report active exploitation or public exploit availability. Exploitation requires local low-privileged access and may cause an application crash.
Researcher notes
The public bundle supports availability-only impact and local exploitation requirements. Vendor remediation details are not included, and the Dell reference appears malformed, so confirm current advisory content before declaring a specific fix path.
Mitigation direction
- Identify all Dell EMC CloudLink installations and versions.
- Prioritize CloudLink 7.1 and earlier for vendor guidance review.
- Check Dell support resources for fixed releases or mitigation instructions.
- Limit local account access to CloudLink hosts.
- Monitor for unexpected CloudLink service crashes or restarts.
Validation and detection
- Inventory CloudLink assets and confirm deployed versions.
- Verify whether any instance runs 7.1 or earlier.
- Review local user access on affected hosts.
- Check application and system logs for crash patterns.
- Confirm remediation status against current Dell guidance.
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-120: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-36333 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
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:N/I:N/A:H1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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.
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.