What is CVE-2025-10240?

CVE-2025-10240 is a high-severity vulnerability in Progress Software Flowmon, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2025-10-09.

How severe is CVE-2025-10240?

High severity. CVSS v3 base score is 8.8 out of 10.

XSS in Progress Software Flowmon

CVE-2025-10240

A vulnerability exists in the Progress Flowmon web application prior to version 12.5.5, whereby a user who clicks a malicious link provided by an attacker may inadvertently trigger unintended actions within their authenticated session.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (22.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Progress Software Flowmon — versions Versions prior to 12.5.5

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security@progress.com (vendor-advisory)

Frequently asked questions

What is CVE-2025-10240?: CVE-2025-10240 is a high-severity vulnerability in Progress Software Flowmon, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2025-10-09.
How severe is CVE-2025-10240?: High severity. CVSS v3 base score is 8.8 out of 10.