What’s Vulnerable › Vulnerabilities

CVE-2004-2375

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2004-12-31 · updated 2026-06-16

Description

Buffer overflow in the POP3 server in 1st Class Mail Server 4.0 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an APOP USER command with a long second parameter (digest).

Affected products

• 1St Class Internet Solutions 1St Class Mail Server: 4.0

References

• http://secunia.com/advisories/11029
• http://securitytracker.com/id?1009279
• http://www.digiti.be/jeffosz/advisories/1stclasspop3.txt
• http://www.osvdb.org/4129
• http://www.securityfocus.com/bid/9794
• http://www.zone-h.org/advisories/read/id=4047
• https://exchange.xforce.ibmcloud.com/vulnerabilities/15314
• http://secunia.com/advisories/11029
• http://securitytracker.com/id?1009279
• http://www.digiti.be/jeffosz/advisories/1stclasspop3.txt
• http://www.osvdb.org/4129
• http://www.securityfocus.com/bid/9794

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