Security readout for executives and security teams
Plain-English summary
Delta Electronics DIALink 1.2.4.0 and earlier has an authenticated cross-site scripting issue in API event comments. A privileged user could store JavaScript that runs in the application context, potentially affecting confidentiality and integrity. The source says this may allow remote code execution, but evidence details are limited.
Executive priority
Handle as a moderate operational technology application risk. It is not listed as actively exploited in the provided evidence, but privileged access abuse could affect trust in the DIALink interface and connected workflows.
Technical view
CVE-2021-38488 is CWE-79 in DIALink API events, where the comment parameter can accept arbitrary JavaScript from an authenticated attacker. CVSS 3.1 is 5.5, with network access, low complexity, high privileges required, changed scope, and low confidentiality/integrity impact.
Likely exposure
Exposure is likely limited to organizations running Delta Electronics DIALink, especially versions 1.2.4.0 and prior, where privileged authenticated users can access API event comment functionality.
Exploitation context
The bundle does not show CISA KEV listing or cited evidence of active exploitation. The issue requires authenticated high-privilege access, reducing broad internet-scale risk, but compromise of privileged accounts could make the bug relevant.
Researcher notes
Source data has a version ambiguity: the description says 1.2.4.0 and prior, while the affected product entry says all versions. Validate against the CISA advisory and vendor material before scoping remediation.
Mitigation direction
- Check Delta and CISA guidance for fixed versions or official workarounds.
- Restrict DIALink access to trusted users and management networks.
- Review and reduce privileged DIALink accounts where possible.
- Monitor DIALink event comments for unexpected script-like content.
- Treat suspicious privileged account activity as a potential exposure path.
Validation and detection
- Inventory DIALink deployments and record installed versions.
- Confirm whether any deployment is version 1.2.4.0 or earlier.
- Identify users with access to API event comment functionality.
- Review application logs for unusual event comment changes.
- Verify vendor guidance has been assessed and applied.
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-79: User-session and phishing behavior lookup
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Open ATT&CK lookupCVE-2021-38488 mapping review
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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.