CVE-2002-1820
register.php in Ultimate PHP Board (UPB) 1.0 and 1.0b uses an administrative account Admin with a...
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."
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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."
- Record
CVE-2002-1820- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-178
- Updated
- 2026-11-02
CVE List No score
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."
- Record
CVE-2002-1820- Updated
- 2026-11-02
EUVDEUVD-2002-1799 No score
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."
- Record
EUVD-2002-1799- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6c7r-27gf-58jj
register.php in Ultimate PHP Board (UPB) 1.0 and 1.0b uses an administrative account Admin with a...
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."
- Record
GHSA-6c7r-27gf-58jj- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-178
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2002-1820 is a critical vulnerability (CVSS 9.8) in Ultimate Php Board Project Php Board, published December 31, 2002. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.38%, the 83rd percentile. No source names a fixed version.