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Fencer Vulns
critical 10.0

CVE-2003-0280 in the critical feed json

Multiple buffer overflows in the SMTP Service for ESMTP CMailServer 4.0.2003.03.27 allow remote attackers to execute arbitrary code via lon…

published 2003-05-14 23 y ago modified 2026-06-16 4 mo ago also EUVD-2003-0275

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
14.7%
EPSS 14.7% chance of exploitation in 30 days, percentile 96%
public exploits
2
Exploit-DB

Summary

Multiple buffer overflows in the SMTP Service for ESMTP CMailServer 4.0.2003.03.27 allow remote attackers to execute arbitrary code via long (1) MAIL FROM or (2) RCPT TO commands.

Timeline

  1. First public exploit (EDB-22582)
  2. Published

Exploit prediction

14.75% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-22582 Youngzsoft CMailServer 4.0 - 'RCPT TO' Buffer Overflow dos, 2003-05-10
  • EDB-22581 Youngzsoft CMailServer 4.0 - MAIL FROM Buffer Overflow dos, 2003-05-10

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

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.