Stored Cross-Site Scripting

published 2023-08-08 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-54077

cvss: 9.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits: 0; none known

Advantech EKI-1524, EKI-1522, EKI-1521 devices through 1.21 are affected by a Stored Cross-Site Scripting vulnerability, which can be triggered by authenticated users in the ping tool of the web-interface.

Patch / fix

fixed in 2

Advantech EKI-1522 1.24
Advantech EKI-1521 1.24

Vendor advisories

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

cisa ICSA-23-269-04 updated 2023-09-26 cvss 5.4

Advantech EKI-1524-CE series

Advantech EKI-1521-CE series <= 1.24 Advantech EKI-1522-CE series <= 1.24 Advantech EKI-1524-CE series <= 1.24
affected: mitigation “Advantech recommends users upgrade to the latest version available (currently v1.26) as shown below:” advantech.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: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-10-10)

Exploit prediction

1.08% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

cyberdanube.com https://cyberdanube.com/en/en-st-polten-uas-multiple-vulnerabilities-in-advantech-eki-15xx-series/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.0	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

Advantech EKI-1524
Advantech EKI-1522
Advantech EKI-1521

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

CVE List CVE-2023-4203
NVD CVE-2023-4203

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