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Fencer Vulns
medium 5.0

CVE-2004-2466 json

chat.ghp in Easy Chat Server 1.2 allows remote attackers to cause a denial of service (server crash) via a long username parameter, possibl…

published 2004-12-31 21 y ago modified 2026-06-16 4 mo ago also EUVD-2004-2457

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
74.7%
EPSS 74.7% chance of exploitation in 30 days, percentile 99.5%
public exploits
5
Metasploit, Exploit-DB

Summary

chat.ghp in Easy Chat Server 1.2 allows remote attackers to cause a denial of service (server crash) via a long username parameter, possibly due to a buffer overflow. NOTE: it was later reported that 2.2 is also affected.

Timeline

  1. Published
  2. First public exploit (Metasploit exploit/windows/http/efs_easychatserver_username)

Exploit prediction

74.70% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/windows/http/efs_easychatserver_username EFS Easy Chat Server Authentication Request Handling Buffer Overflow metasploit exploit, great rank, 2007-08-14
  • EDB-50999 Easy Chat Server 3.1 - Remote Stack Buffer Overflow (SEH) remote, 2022-08-01
  • EDB-33326 EFS Easy Chat Server 3.1 - Remote Stack Buffer Overflow remote, 2014-05-12
  • EDB-16772 EFS Easy Chat Server - Authentication Request Handling Buffer Overflow (Metasploit) remote, 2010-08-06
  • EDB-4289 EFS Easy Chat Server 2.2 - Remote Denial of Service dos, 2007-08-14
  • archives.neohapsis.com http://archives.neohapsis.com/archives/fulldisclosure/2004-07/0077.html referenced PoC, tagged "exploit" by a source, unverified
  • secunia.com http://secunia.com/advisories/12006 referenced PoC, tagged "exploit" by a source, unverified
  • autistici.org http://www.autistici.org/fdonato/advisory/EasyChatServer1.2-adv.txt referenced PoC, tagged "exploit" by a source, unverified
  • osvdb.org http://www.osvdb.org/7416 referenced PoC, tagged "exploit" by a source, unverified
  • archives.neohapsis.com http://archives.neohapsis.com/archives/bugtraq/2004-07/0013.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.