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Fencer Vulns
high 7.5

CVE-2004-2375 json

Buffer overflow in the POP3 server in 1st Class Mail Server 4.0 allows remote attackers to cause a denial of service (crash) and possibly e…

published 2004-12-31 21 y ago modified 2026-06-16 4 mo ago also EUVD-2004-2367

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.9%
EPSS 5.9% chance of exploitation in 30 days, percentile 93%
public exploits
1
Exploit-DB

Summary

Buffer overflow in the POP3 server in 1st Class Mail Server 4.0 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an APOP USER command with a long second parameter (digest).

Timeline

  1. First public exploit (EDB-23787)
  2. Published

Exploit prediction

5.86% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-23787 1st Class Internet Solutions 1st Class Mail Server 4.0 - Remote Buffer Overflow (PoC) dos, 2004-03-02
  • digiti.be http://www.digiti.be/jeffosz/advisories/1stclasspop3.txt referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/9794 referenced PoC, tagged "exploit" by a source, unverified
  • zone-h.org http://www.zone-h.org/advisories/read/id=4047 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.