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CVE-2007-4646

42
FAUCET Score

CVE-2007-4646 describes a critical buffer overflow vulnerability in the POP3 service of Hexamail Server 3.0.0.001 Lite. This flaw allows unauthenticated remote attackers to trigger a denial of service by sending an excessively long USER command, and potentially execute arbitrary code. With a CVSS score of 10.0, this vulnerability is easily exploitable over the network with no authentication required, leading to complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog or showing active exploitation, a proof-of-concept exploit is publicly available on ExploitDB, though there is minimal community discussion or media coverage surrounding this older CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.0.001_liteCPE matchmatch criteria
cpe:2.3:a:hexamail:hexamail_server:3.0.0.001_lite:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
15.52%
Probability of exploitation in next 30 days
EPSS Percentile
96.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-4344 · Aug 30, 2007
This CVE's current EPSS score of 0.1552 is in the 95th percentile among its peer group of 51,466 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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