| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 20584 | Ubuntu 5.04 : courier vulnerability (USN-174-1) | Nessus | Ubuntu Local Security Checks | medium |
| 19527 | Debian DSA-784-1 : courier - programming error | Nessus | Debian Local Security Checks | medium |
| 18620 | Courier Mail Server < 0.50.1 DNS SPF Record Lookup Failure Memory Corruption DoS | Nessus | SMTP problems | low |
| 3048 | Courier Mail Server < 0.50.1 SPF Data Lookup Remote DoS | Nessus Network Monitor | SMTP Servers | low |