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CVE-2025-10240VulnerabilityPublished Updated

CVE-2025-10240: Progress Software Flowmon · XSS or 'Cross-site Scripting'

Affects Progress Software FlowmonSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High : upgrade to 12.5.5 soon.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 12.5.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Upgrade Progress Software Flowmon to 12.5.5.

Affected software

ProductAffectedFixed in
Progress Software FlowmonAffected
  • <12.5.5
Fixed in
  • 12.5.5

AI-suggested

Organizations should immediately upgrade Flowmon to version 12.5.5 or later once the patch is available to fully remediate the vulnerability. Until then, implement strict input validation and output encoding on all user-supplied data within the application environment, if possible. Employ web application firewalls (WAFs) configured with rules to detect and block XSS attack patterns targeting Flowmon interfaces. Educate users to avoid clicking suspicious or unsolicited links, especially those purporting to relate to Flowmon or network monitoring. Monitor logs and network traffic for unusual activity indicative of attempted exploitation, such as anomalous URL parameters or script injections. Restrict access to the Flowmon web interface to trusted networks and enforce multi-factor authentication to reduce the risk of session compromise. Regularly review and update security policies to include protections against social engineering attacks that could deliver malicious links. Coordinate with Progress Software for timely patch deployment and stay informed on any emerging exploit reports.

Description

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.

References

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