Security readout for executives and security teams
Plain-English summary
Delta Electronics DIAEnergie 1.7.5 and earlier has a reflected cross-site scripting issue in error-page handling. An attacker may be able to cause the application to return attacker-controlled script content, creating integrity risk for users or workflows that interact with the application.
Executive priority
Prioritize remediation for exposed or operationally important DIAEnergie systems. The issue is high severity and affects application integrity, but the provided sources do not establish active exploitation.
Technical view
CVE-2021-23228 is CWE-79 reflected XSS in DIAEnergie error pages returned through .NET Request.QueryString. The provided CVSS 3.1 score is 7.5, network-accessible, low complexity, no privileges, and high integrity impact. The bundle does not identify a fixed version or detailed exploit conditions.
Likely exposure
Organizations using Delta Electronics DIAEnergie version 1.7.5 or earlier are in scope. Internet- or broadly network-accessible deployments carry higher business risk, especially where users with operational privileges access the application.
Exploitation context
The source bundle does not show CISA KEV inclusion or cite active exploitation. Treat this as a credible web application exposure, but do not assume exploitation in the wild without additional evidence.
Researcher notes
Evidence is limited to the CVE bundle and CISA advisory reference. The affected range is stated as 1.7.5 and prior, while the structured affected field says all versions; use vendor guidance to resolve scope precisely.
Mitigation direction
- Identify all DIAEnergie deployments and versions.
- Check Delta Electronics and CISA guidance for available updates or vendor fixes.
- Restrict DIAEnergie access to trusted networks and users.
- Review web application controls for reflected XSS protection.
- Monitor application logs for unusual error-page requests.
Validation and detection
- Confirm whether deployed DIAEnergie versions are 1.7.5 or earlier.
- Review exposure paths from the internet and internal networks.
- Validate whether error pages reflect query string input unsafely.
- Check security tooling findings against CVE-2021-23228.
- Document compensating controls if patch status is unavailable.
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
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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-2021-23228 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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:N/UI:N/S:U/C:N/I:H/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-238-03CVE 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.