CVE-2026-82771
Received Received - Intake

Cross-Site Scripting in Contec EC1000 Series

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: JPCERT/CC

Description
Cross-site scripting vulnerability exists in Contec EC1000 series. If this vulnerability is exploited, an arbitrary script may be executed on a logged-in user's web browser.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-14
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-82771
EUVD
EUVD-2026-77224

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a cross-site scripting (XSS) vulnerability in the Contec EC1000 series. It allows an attacker to inject malicious scripts into a web page viewed by a logged-in user, potentially executing arbitrary code in the user's browser.

Detection Guidance

Detecting this XSS vulnerability may require manual inspection of web application inputs or using automated tools. Check web server logs for unusual script patterns or inputs containing <script> tags. Use browser developer tools to inspect client-side behavior when interacting with EC1000 series interfaces.

Impact Analysis

An attacker could steal session cookies, redirect users to malicious sites, or perform actions on behalf of the user. This may lead to unauthorized access to sensitive data or account takeover.

Compliance Impact

This vulnerability could lead to unauthorized data access or disclosure, violating GDPR's data protection principles or HIPAA's security requirements. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Apply vendor patches or updates for Contec EC1000 series immediately. Implement input validation and output encoding on all user-supplied data. Use Content Security Policy (CSP) headers to mitigate XSS impact. Restrict user privileges to minimize potential damage if exploited.

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