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CVE-2004-2146

15
FAUCET Score

CVE-2004-2146 describes a CRLF injection vulnerability in PD9 Software MegaBBS versions 2 and 2.1. This flaw allows unauthenticated attackers to perform HTTP response splitting attacks by manipulating the 'fid' parameter within a 'writenew' action to 'thread-post.asp'. With a CVSS score of 5.0 (medium severity), the vulnerability has a low attack complexity and requires no authentication, potentially leading to information integrity compromise. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2CPE matchmatch criteria
cpe:2.3:a:pd9_software:megabbs:2:*:*:*:*:*:*:*
2.1CPE matchmatch criteria
cpe:2.3:a:pd9_software:megabbs:2.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 45th percentile among its peer group of 23,684 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

archives.neohapsis.com / archives/fulldisclosure/2004-09/0962.html
Exploit
marc.info
exchange.xforce.ibmcloud.com / vulnerabilities/17495
pd9soft.com / megabbs/forums/thread-view.asp