Security readout for executives and security teams
Plain-English summary
Delta Electronics DIALink 1.2.4.0 and prior can allow a highly privileged authenticated user to place malicious script content into an API schedule parameter name. The issue is not listed in CISA KEV, and the provided sources do not show active exploitation.
Executive priority
Treat this as a moderate-priority industrial software issue. It requires authenticated high-privilege access, reducing broad external risk, but affected DIALink systems should still be inventoried and governed because the cited impact includes possible code execution.
Technical view
This is a CWE-79 cross-site scripting issue in Delta Electronics DIALink. The CVSS 3.1 vector is AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N, scoring 5.5. The source description says injected JavaScript in the API schedule parameter name may allow remote code execution.
Likely exposure
Exposure is likely limited to organizations running Delta Electronics DIALink 1.2.4.0 or earlier, especially where authenticated users can manage API schedules. The bundle does not identify affected deployment patterns, internet exposure, or a fixed version.
Exploitation context
The source bundle reports authenticated exploitation with high privileges required and no user interaction. CISA KEV status is false, and the cited sources provided here do not establish public exploitation or a weaponized exploit.
Researcher notes
Evidence is limited to CVE and CISA advisory references in the bundle. Do not assume unauthenticated access, active exploitation, or a specific patch version from these sources. Validate scope against actual DIALink versions and vendor guidance.
Mitigation direction
- Identify all Delta Electronics DIALink deployments and versions.
- Check Delta and CISA guidance for the applicable fixed release or mitigation.
- Restrict DIALink administrative and API schedule access to trusted users only.
- Review schedule-related inputs for unexpected script-like content.
- Limit network access to DIALink management interfaces where operationally feasible.
Validation and detection
- Confirm whether any DIALink instance is version 1.2.4.0 or earlier.
- Review accounts with permissions to create or edit API schedules.
- Inspect schedule parameter names for unexpected JavaScript-like content.
- Check application and access logs for unusual schedule modifications.
- Document whether vendor guidance names a patch or compensating control.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCVE-2021-38428 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:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/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:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N2.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://us-cert.cisa.gov/ics/advisories/icsa-21-294-02CVE 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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.