Cross-site Scripting (XSS)Weakness · CWE-79

CVE-2025-14320

CRITICAL · 9.8 CVSS v3.1 Published 2026-05-04
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Tegsoft Management and Information Services Trade Limited Company Online Support Application allows Reflected XSS. This issue affects Online Support Application: from V3 through 31122025.

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 confidence

Reflected XSS vulnerability in Tegsoft Online Support Application allows attackers to inject malicious JavaScript into web pages through unsanitized user input. This affects versions V3 through 31122025 of the Online Support Application.

MitigationImplement proper input validation and output encoding to neutralize special characters in user-supplied data before rendering in web pages. Apply any vendor patches if available.

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
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify Tegsoft Online Support Application installation
    Search for Tegsoft installation directories or check running services/processes for 'tegsoft' or 'online support' components
    Affected if Tegsoft Online Support Application is not installed on the system
  2. Determine installed version
    Check the application's version information through its admin interface, configuration files, or installation metadata
    Affected if Version falls within V3 through 31122025 range
  3. Compare version to affected range
    Parse the version number and compare against V3 (minimum) and 31122025 (maximum)
    Affected if Installed version is V3 or higher, or is 31122025 or lower, meaning it falls within or overlaps the affected range
  4. Verify web interface exposure
    Identify if the Online Support Application web interface is accessible externally or to untrusted users
    Affected if Web interface is exposed to users or attackers who can craft malicious URLs
  5. Identify input handling in web pages
    Review web application traffic or logs for user-supplied parameters that get reflected in responses without encoding
    Affected if Application reflects user input in web page responses without visible sanitization

User is affected if Tegsoft Online Support Application version V3 through 31122025 is installed and its web interface is accessible to users who can trigger reflected XSS through unsanitized input parameters.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper input validation and output encoding to neutralize special characters in user-supplied data before rendering in web pages. Apply any vendor patches if available.

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
17.0 hours of engineering $3,000
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Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-14320 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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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