CVE-2000-1166

Twig webmail system does not properly set the "vhosts" variable if it is not configured on the site, which allows remote attackers to insert arbitrary PHP (PHP3) code by specifying an alternate vhosts as an argument to the index.php3 program.

Published: 2001-01-09 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2000-1166 is rated Moderate Risk (56.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.63%). 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-2000-1166

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 0.87% 1.63% +0.76%
2 2025-03-17 0.70% 0.87% +0.17%
3 2024-12-17 — 0.70% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2000-1166

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P 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:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2000-1166

Affected software / configurations for CVE-2000-1166

Vendor Product Version Raw CPE
twig_development_team twig 2.5.1 cpe:2.3:a:twig_development_team:twig:2.5.1:*:*:*:*:*:*:*

References for CVE-2000-1166

cvelogic Threat Intelligence