system
Describe <CVE-2009-1959>.
user
What is <CVE-2009-1959>?
assistant
Off-by-one error in the event_wallops function in fe-common/irc/fe-events.c in irssi 0.8.13 allows remote IRC servers to cause a denial of service (crash) via an empty command, which triggers a one-byte buffer under-read and a one-byte buffer underflow..