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CVE-2004-2721

14
FAUCET Score

CVE-2004-2721 describes a critical vulnerability in openSkat VTMF versions prior to 2.1, where the CheckGroup function can generate public key pairs with a non-prime "p" variable. This flaw allows remote attackers to deduce the private key, enabling them to decrypt sensitive messages. With a CVSS score of 4.3, this vulnerability has a network attack vector and medium attack complexity, leading to a potential compromise of confidentiality. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.0CPE matchmatch criteria
cpe:2.3:a:heiko_stamer:openskat:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.67%
Probability of exploitation in next 30 days
EPSS Percentile
74.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0167 is in the 51st percentile among its peer group of 19,955 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, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

freshmeat.net / projects/openskat
Patch
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/18049
osvdb.org / 11652
securityfocus.com / bid/11667
Patch