Is CVE-2007-4646 in the CISA KEV catalog?

No. CVE-2007-4646 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2007-4646?

CVE-2007-4646 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2007-4646?

CVE-2007-4646 has an EPSS score of 15.52% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2007-4646

HIGHEPSS 96th pctl

10.0

CVSS v2

NVD

Description

Buffer overflow in the pop3 service in Hexamail Server 3.0.0.001 Lite allows remote attackers to cause a denial of service (daemon crash) and probably execute arbitrary code via a long USER command.

CWE-94Code Injection

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

15.52%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

http://secunia.com/advisories/26666
http://www.securityfocus.com/bid/25496
http://www.securitytracker.com/id?1018637
http://www.vupen.com/english/advisories/2007/3044
https://exchange.xforce.ibmcloud.com/vulnerabilities/36369
https://www.exploit-db.com/exploits/4344

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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.