CVE-2001-0021

CVE-2001-0021 is a critical-severity vulnerability in Endymion Mailman Webmail with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

MailMan Webmail 3.0.25 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in the alternate_template parameter.

Frequently asked questions

What is CVE-2001-0021?
MailMan Webmail 3.0.25 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in the alternate_template parameter.
How severe is CVE-2001-0021?
CVE-2001-0021 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2001-0021 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0021?
CVE-2001-0021 primarily affects Endymion Mailman Webmail. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-0021?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2001-0021 published?
CVE-2001-0021 was published on 2001-02-16 and last updated on 2026-06-16.

References

Affected products (17)

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