Security readout for executives and security teams
Plain-English summary
This flaw lets an unauthenticated remote attacker plant script content in the 1734-AENTR module web interface. The script runs only when someone views the affected page, and the documented impact is changing some homepage string values. It matters because it affects industrial communication equipment, but the provided sources do not show active exploitation.
Executive priority
Treat this as a moderate OT security issue. It is not confirmed as actively exploited, but affected industrial modules should be inventoried and remediated through vendor guidance, especially if web interfaces are broadly reachable.
Technical view
CVE-2020-14502 is stored cross-site scripting in the Rockwell Automation 1734-AENTR web interface. It is CWE-79 with CVSS 3.1 score 6.1. Affected versions are Series B 4.001-4.005, 5.011-5.017, and Series C 6.011-6.012. Attack complexity and privileges are low, but user interaction is required.
Likely exposure
Exposure is limited to environments running affected 1734-AENTR modules where the web interface is reachable. Internet or broad enterprise access would increase risk, but the bundle does not provide exposure prevalence.
Exploitation context
The source states remote unauthenticated stored XSS is possible, but execution requires a user to access the web interface. KEV status is false, and no cited source reports active exploitation.
Researcher notes
Evidence supports stored XSS with unauthenticated network access and user interaction. Documented impact is limited to modifying some homepage string values. The bundle does not name a fixed version, proof of exploitation, or broader control-system impact.
Mitigation direction
- Identify 1734-AENTR modules and confirm series and firmware versions.
- Review the CISA/Rockwell advisory for vendor-approved remediation guidance.
- Restrict access to the module web interface to trusted administrative paths.
- Monitor affected web interface fields for unexpected string changes.
- Prioritize remediation where OT management interfaces are reachable from untrusted networks.
Validation and detection
- Inventory 1734-AENTR modules in OT asset records and network scans.
- Compare firmware against the affected Series B and Series C ranges.
- Confirm whether the module web interface is reachable from user or external networks.
- Review homepage string values for unauthorized or unexpected modifications.
- Check vendor advisory status before treating any firmware change as approved.
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-2020-14502 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
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-063-01CVE 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.