CVE & CISA-KEV CatalogNVD
CVE-1999-0682
MEDIUMEPSS 98th pctl5.0
CVSS v2
Description
Microsoft Exchange 5.5 allows a remote attacker to relay email (i.e. spam) using encapsulated SMTP addresses, even if the anti-relaying features are enabled.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
26.10%probability of exploitation in 30 days
98thpercentile
Very high risk: more likely to be exploited than 98% 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.