channel.c in ngIRCd 20 and 20.1 allows remote attackers to cause a denial of service (assertion failure and crash) via a KICK command for a user who is not on the associated channel.
| Software | From | Fixed in |
|---|---|---|
| ngircd / ngircd | 20 | 20.x |
| ngircd / ngircd | 20.1 | 20.1.x |