CVE-2006-1644

login.php in Interact 2.1.1 generates different responses depending on whether or not a username is valid, which allows remote attackers to determine valid usernames. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Published: 2006-04-06 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-1644 is rated Moderate Risk (45/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.39%). EPSS rose +1.00% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2006-1644

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.39% 1.39% +1.00%
2 2025-03-17 0.61% 0.39% -0.22%
3 2024-12-17 — 0.61% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-1644

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2006-1644

Affected software / configurations for CVE-2006-1644

Vendor Product Version Raw CPE
interact interact <= 2.1.1 cpe:2.3:a:interact:interact:*:*:*:*:*:*:*:*
interact interact 1.8.7 cpe:2.3:a:interact:interact:1.8.7:*:*:*:*:*:*:*
interact interact 1.9 cpe:2.3:a:interact:interact:1.9:*:*:*:*:*:*:*
interact interact 1.9.1 cpe:2.3:a:interact:interact:1.9.1:*:*:*:*:*:*:*
interact interact 2.0 cpe:2.3:a:interact:interact:2.0:*:*:*:*:*:*:*
interact interact 2.1 cpe:2.3:a:interact:interact:2.1:*:*:*:*:*:*:*

References for CVE-2006-1644

cvelogic Threat Intelligence