A vulnerability was found in GNU Nano that allows a possible privilege escalation through an insecure temporary file. If Nano is killed while editing, a file it saves to an emergency file with the permissions of the running user provides a window of opportunity for attackers to escalate privileges through a malicious symlink.
Exploitability
AV:LAC:HPR:LUI:RScope
S:UImpact
C:HI:HA:H6.7/CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:HFile System