CVE-2023-40045

Name: CVE-2023-40045
Creator: NVD / NIST
Published: 2023-09-27T15:18:57.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2023-40045 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a reflected cross-site scripting (XSS) vulnerability exists in WS_FTP Server's Ad Hoc Transfer module. An attacker could leverage this vulnerability to target WS_FTP Server users with a specialized payload which results in the execution of malicious JavaScript within the context of the victims browser. . EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a reflected cross-site scripting (XSS) vulnerability exists in WS_FTP Server's Ad Hoc Transfer module. An attacker could leverage this vulnerability to target WS_FTP Server users with a specialized payload which results in the execution of malicious JavaScript within the context of the victims browser.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.90%

54.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Progress	Ws Ftp Server	< 8.7.4
Progress	Ws Ftp Server	>= 8.8, < 8.8.2

References

https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023Vendor Advisory
https://www.progress.com/ws_ftpProduct
https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023Vendor Advisory
https://www.progress.com/ws_ftpProduct

Timeline

Published: Sep 27, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-40045?

How severe is CVE-2023-40045?

CVE-2023-40045 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40045?

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-2023-40045?

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

Scan your code now

Source: NVD / NIST