CVE-2026-2514
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIn Progress Flowmon ADS versions prior to 12.5.5 and 13.0.3, a vulnerability exists whereby an adversary with access to Flowmon monitoring ports may craft malicious network data that, when processed by Flowmon ADS and viewed by an authenticated user, could result in unintended actions being executed in the user's browser context.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThis is a stored Cross-Site Scripting (XSS) vulnerability in Flowmon ADS where an attacker with network access to monitoring ports can inject malicious data that gets processed by the application and displayed to authenticated users, resulting in arbitrary JavaScript execution in the victims' browser context.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Adjacent
- Complexity
- Low
- Privileges
- None
- Authentication
- X
- User interaction
- P
- Scope
- X
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm Flowmon ADS is installedLocate Flowmon ADS installation directory or check system services for 'Flowmon' or 'ADS' processes. Common installation paths may include /opt/flowmon, C:\Program Files\Flowmon, or check the web server serving the Flowmon interface (typically ports 443 or 8080).Affected if Flowmon ADS software is present on the system
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Identify installed Flowmon ADS versionAccess the Flowmon web interface admin panel and navigate to Settings > About or System Information. Alternatively, check version files in the installation directory if accessible. Compare the version number against 12.5.5 and 13.0.3.Affected if Installed version is lower than 12.5.5 or between 12.5.5 and 13.0.2 (not inclusive)
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Verify network exposure of monitoring portsReview firewall rules and network configuration to determine which ports Flowmon monitoring services are listening on (typically 443, 8443, or custom monitoring ports). Check if these ports are accessible from untrusted networks.Affected if Monitoring ports are accessible from networks outside the trusted administrative zone
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Review authentication logs for suspicious activityExamine Flowmon ADS authentication and event logs for entries containing unexpected characters, scripts, or HTML tags in user-supplied fields that may indicate XSS payload injection attempts.Affected if Log entries show suspicious patterns consistent with XSS injection attempts or stored malicious scripts
A user is affected if Flowmon ADS is installed with a version below 12.5.5 (or between 12.5.5 and 13.0.2) AND monitoring ports are accessible to untrusted network segments where attackers could inject malicious data.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedUpdate Flowmon ADS to version 12.5.5 or 13.0.3 or later to obtain the vendor patch. Until patched, restrict access to Flowmon monitoring ports to trusted personnel only.
Flowmon ADS 12.5.5 (for 12.x branch) or 13.0.3 (for 13.x branch)
- Identify the currently installed Flowmon ADS version by checking the system configuration or About section
- Determine which release branch (12.x or 13.x) is currently in use
- For systems running versions prior to 12.5.5: Upgrade to version 12.5.5 or later
- For systems running versions prior to 13.0.3: Upgrade to version 13.0.3 or later
- Schedule the upgrade during a maintenance window following standard backup procedures
- After upgrade, verify the system is functioning correctly and the XSS vulnerability is remediated
- Review Flowmon ADS release notes for any additional security hardening in the new version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-2514 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-2514 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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