Extcompose in metamail does not verify the output file before writing to it, which allows local users to overwrite arbitrary files via a symlink attack.

Multiple buffer overflows in Metamail 2.7 and earlier allow remote attackers to execute arbitrary code.

Multiple format string vulnerabilities in Metamail 2.7 and earlier allow remote attackers to execute arbitrary code.

Metamail before 2.7-7.2 allows remote attackers to overwrite arbitrary files via an e-mail message containing a uuencoded attachment that specifies the full pathname for the file to be modified, which is processed by uuencode in Metamail scripts such as sun-audio-file.