Is CVE-2006-6423 in the CISA KEV catalog?

No. CVE-2006-6423 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2006-6423?

CVE-2006-6423 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2006-6423?

CVE-2006-6423 has an EPSS score of 67.04% (99th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2006-6423

HIGHEPSS 99th pctl

10.0

CVSS v2

NVD

Description

Stack-based buffer overflow in the IMAP service for MailEnable Professional and Enterprise Edition 2.0 through 2.35, Professional Edition 1.6 through 1.84, and Enterprise Edition 1.1 through 1.41 allows remote attackers to execute arbitrary code via a pre-authentication command followed by a crafted parameter and a long string, as addressed by the ME-10025 hotfix.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

67.04%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.