Minicom is a text-based serial port communications program.
In minicom before version 2.7.1, the escparms[] buffer in vt100.c is vulnerable to an overflow.
A remote attacker, able to connect to a minicom port, could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition.
There is no known workaround at this time.
All minicom users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dialup/minicom-2.7.1"