How severe is CVE-2000-0239?

CVE-2000-0239 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2000-0239 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0239?

CVE-2000-0239 primarily affects Atrium Software Mercur Imap4 Server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0239?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2000-0239 published?

CVE-2000-0239 was published on 2000-03-15 and last updated on 2026-06-16.

CVE-2000-0239

CVE-2000-0239 is a medium-severity vulnerability in Atrium Software Mercur Imap4 Server with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Atrium Software Mercur Imap4 Server
Published: 2000-03-15
Last modified: 2026-06-16

Description

Buffer overflow in the MERCUR WebView WebMail server allows remote attackers to cause a denial of service via a long mail_user parameter in the GET request.

Frequently asked questions

What is CVE-2000-0239?: Buffer overflow in the MERCUR WebView WebMail server allows remote attackers to cause a denial of service via a long mail_user parameter in the GET request.
How severe is CVE-2000-0239?: CVE-2000-0239 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2000-0239 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0239?: CVE-2000-0239 primarily affects Atrium Software Mercur Imap4 Server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0239?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0239 published?: CVE-2000-0239 was published on 2000-03-15 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:atrium_software:mercur_imap4_server:3.20.01:*:*:*:*:*:*:*
cpe:2.3:a:atrium_software:mercur_mailserver:3.2:*:*:*:*:*:*:*
cpe:2.3:a:atrium_software:mercur_pop3_server:3.20.01:*:*:*:*:*:*:*

More vulnerabilities in Atrium Software Mercur Imap4 Server

CVE-2000-0198 — Medium (CVSS 5.0): Buffer overflow in POP3 and IMAP servers in the MERCUR mail server suite allows remote attackers to cause a denial of…

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