CVE & CISA-KEV CatalogNVD
CVE-1999-0284
HIGHEPSS 95th pctl7.5
CVSS v2
Description
Denial of service to NT mail servers including Ipswitch, Mdaemon, and Exchange through a buffer overflow in the SMTP HELO command.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
11.63%probability of exploitation in 30 days
95thpercentile
Very high risk: more likely to be exploited than 95% of all known CVEs.
References
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Start freeThis 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 2026-04-16.