The web interface of the 1734-AENTR communication module is vulnerable to stored XSS.

published 2022-02-24 4 y ago modified 2026-06-17 4 mo ago also EUVD-2020-6638

cvss: 6.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits: 0; none known

The web interface of the 1734-AENTR communication module is vulnerable to stored XSS. A remote, unauthenticated attacker could store a malicious script within the web interface that, when executed, could modify some string values on the homepage of the web interface.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-063-01 updated 2021-03-04 cvss 4.7

Rockwell Automation 1734-AENTR Series B and Series C

Rockwell Automation Series B > 4.001, < 4.005, > 5.011, < 5.017 Rockwell Automation Series C 6.011 and 6.012
affected: vendor fix, mitigation “1734-AENTR Series C, update to firmware Version 6.013” compatibility.rockwellautomation.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-04-17)

Exploit prediction

1.01% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

Rockwell Automation 1734-AENTR

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

cisa.gov /uscert/ics/advisories/icsa-21-063-01
mitigation, third-party-advisory, us-government-resource

Sources

CVE List CVE-2020-14502
NVD CVE-2020-14502

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary