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Fencer Vulns
high 7.5

CVE-2004-1291 json

Buffer overflow in qwik-smtpd allows remote attackers to use the server as an SMTP spam relay via a long HELO command, which overwrites the…

published 2004-12-22 21 y ago modified 2026-06-16 4 mo ago also EUVD-2004-1288

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits
1
Exploit-DB

Summary

Buffer overflow in qwik-smtpd allows remote attackers to use the server as an SMTP spam relay via a long HELO command, which overwrites the adjacent localIP data buffer.

Timeline

  1. First public exploit (EDB-25004)
  2. Published

Exploit prediction

2.46% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-25004 QwikMail 0.3 - 'HELO' Buffer Overflow (PoC) dos, 2004-12-15
  • tigger.uic.edu http://tigger.uic.edu/~jlongs2/holes/qwik-smtpd.txt 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.