CVE-2023-40143

Name: CVE-2023-40143
Creator: NVD / NIST
Published: 2024-02-06T22:16:13.113+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.29%

Last modified Jun 17, 2026

CVE-2023-40143 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. An attacker with access to the Westermo Lynx web application that has the vulnerable software could introduce arbitrary JavaScript by injecting a cross-site scripting payload into the "forward.0.domain" parameter. . EPSS estimates a 0.29% chance of exploitation in the next 30 days.

Description

An attacker with access to the Westermo Lynx web application that has the vulnerable software could introduce arbitrary JavaScript by injecting a cross-site scripting payload into the "forward.0.domain" parameter.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.29%

21.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Westermo	L206-F2g Firmware	4.24

References

https://www.cisa.gov/news-events/ics-advisories/icsa-24-023-04Third Party Advisory, US Government Resource
https://www.cisa.gov/news-events/ics-advisories/icsa-24-023-04Third Party Advisory, US Government Resource

Timeline

Published: Feb 6, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-40143?

How severe is CVE-2023-40143?

CVE-2023-40143 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40143?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-40143?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST