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CVE-2002-1820

Critical Vulnerability: CVE-2002-1820 — ultimate_php_board_project — ultimate_php_board

register.php in Ultimate PHP Board (UPB) 1.0 and 1.0b uses an administrative account Admin with a capital "A," but allows a remote attacker to impersonate the administrator by registering an account name of admin with a lower case "a."

Friday, April 17, 2026ultimate_php_board_projectVulnios Threat Intelligence
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Executive Summary

register.php in Ultimate PHP Board (UPB) 1.0 and 1.0b uses an administrative account Admin with a capital "A," but allows a remote attacker to impersonate the administrator by registering an account name of admin with a lower case "a."

Why It Matters

CVE-2002-1820 is rated CRITICAL severity, requiring immediate attention from security teams.

CVSS Base Score: 9.8/10

Affected Technologies

Vendors: ultimate_php_board_project

Products: ultimate_php_board

🛡️What Defenders Should Check

  • Check if you are affected — Review your asset inventory for products listed in CVE-2002-1820.
  • Apply available patches — Visit vendor advisories for the latest security updates.
  • Monitor for exploitation — Check your SIEM/IDS logs for related indicators.

    • Use Vulnios to continuously monitor your exposure to CVE-2002-1820 and similar vulnerabilities.

    References & Sources

  • http://www.iss.net/security_center/static/9972.php
  • http://www.securityfocus.com/archive/1/289417
  • http://www.securityfocus.com/bid/5580
  • http://www.iss.net/security_center/static/9972.php
  • http://www.securityfocus.com/archive/1/289417
  • http://www.securityfocus.com/bid/5580

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    Affected Products

    ultimate_php_board

    Sources

    critical

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