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Fencer Vulns
high 7.5

CVE-2004-1558 in the critical feed json

Multiple stack-based buffer overflows in YPOPs!

published 2004-12-31 21 y ago modified 2026-06-16 4 mo ago also EUVD-2004-1552

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
71.1%
EPSS 71.1% chance of exploitation in 30 days, percentile 99.4%
public exploits
4
Metasploit, Exploit-DB

Summary

Multiple stack-based buffer overflows in YPOPs! (aka YahooPOPS) 0.4 through 0.6 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long (1) POP3 USER command or (2) SMTP request.

Patch / fix

Timeline

  1. First public exploit (Metasploit exploit/windows/smtp/ypops_overflow1)
  2. Published

Exploit prediction

71.11% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/windows/smtp/ypops_overflow1 YPOPS 0.6 Buffer Overflow metasploit exploit, average rank, 2004-09-27
  • EDB-16818 YahooPOPs (YPOPS) 0.6 - Remote Buffer Overflow (Metasploit) remote, 2010-05-09
  • EDB-582 YahooPOPs 1.6 - SMTP Remote Buffer Overflow remote, 2004-10-18
  • EDB-577 YahooPOPs 1.6 - SMTP Port Buffer Overflow remote, 2004-10-15
  • securityfocus.com http://www.securityfocus.com/bid/11256 referenced PoC, tagged "exploit" by a source, unverified
  • hat-squad.com http://www.hat-squad.com/en/000075.html 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.