CVE-2004-2466
MediumPublic exploitchat.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.
Published Dec 31, 2004 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2004-2466 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Easy Chat Server (Efs Software).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 75% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS (30-day exploit likelihood)
75%
Higher than 99.5% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2004-2466 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Easy Chat ServerEfs Software | 1.2, 2.2 | n/a |
Timeline
Publicly disclosed
Dec 31, 2004
Last updated
Apr 15, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- advisory26461
- exploit20040702 Multiple Vulnerabilities in Easy Chat Server 1.2
- exploit20040702 Multiple Vulnerabilities in Easy Chat Server 1.2
- exploit12006
- exploitMSF efs_easychatserver_username.rb
FAQ
Common Questions.
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.
Affected: Easy Chat Server (Efs Software) versions 1.2, 2.2. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
Is CVE-2004-2466 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo