What’s Vulnerable › Vulnerabilities

CVE-2004-2721

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2004-12-31 · updated 2026-06-16
• Weakness: CWE-310

Description

The CheckGroup function in openSkat VTMF before 2.1 generates public key pairs in which the "p" variable might not be prime, which allows remote attackers to determine the private key and decrypt messages.

Affected products

• Heiko Stamer Openskat: through 2.0

References

• http://freshmeat.net/projects/openskat/?branch_id=36295&release_id=178549
• http://securitytracker.com/id?1012181
• http://www.osvdb.org/11652
• http://www.securityfocus.com/bid/11667
• https://exchange.xforce.ibmcloud.com/vulnerabilities/18049
• http://freshmeat.net/projects/openskat/?branch_id=36295&release_id=178549
• http://securitytracker.com/id?1012181
• http://www.osvdb.org/11652
• http://www.securityfocus.com/bid/11667
• https://exchange.xforce.ibmcloud.com/vulnerabilities/18049

Get alerted when CVE-2004-2721 or the next vulnerability affects your stack