How severe is CVE-2000-1166?

CVE-2000-1166 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2000-1166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-1166?

CVE-2000-1166 affects Twig Development Team Twig. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2000-1166?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2000-1166 published?

CVE-2000-1166 was published on 2001-01-09 and last updated on 2026-06-16.

CVE-2000-1166

CVE-2000-1166 is a high-severity vulnerability in Twig Development Team Twig with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Twig Development Team Twig
Published: 2001-01-09
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2000-1166?: CVE-2000-1166 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2000-1166 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-1166?: CVE-2000-1166 affects Twig Development Team Twig. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2000-1166?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2000-1166 published?: CVE-2000-1166 was published on 2001-01-09 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:twig_development_team:twig:2.5.1:*:*:*:*:*:*:*

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