mIRC before 6.35 allows attackers to cause a denial of service (crash) via a long nickname.
https://www.mirc.com/versions.txt
http://www.mirc.com/news.html
Source: Mitre, NVD
Published: 2020-01-23
Updated: 2020-01-27
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: High
EPSS: 0.00408