Westermo Lynx Cross-site Scripting

published 2024-02-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-49529

cvss: 5.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits: 0; none known

An attacker with access to the web application that has the vulnerable software could introduce arbitrary JavaScript by injecting a cross-site scripting payload into the "autorefresh" parameter.

Vendor advisories

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

cisa ICSA-24-023-04 updated 2024-01-23 cvss 5.4

Westermo Lynx 206-F2G

Westermo Lynx Firmware 4.24. Westermo Lynx Model L206-F2G1
affected: mitigation “Westermo recommends following best practices for hardening, such as restricting access, disable unused services (attack surface reduction) etc., to mitigate the reported vulnerabilities.”

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: 2 y ago (2024-02-07)

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

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

Westermo Lynx

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

cisa.gov /news-events/ics-advisories/icsa-24-023-04
third-party-advisory, us-government-resource

Sources

CVE List CVE-2023-45222
NVD CVE-2023-45222

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Summary