Mutt before 1.14.3 proceeds with a connection even if, in response to a GnuTLS certificate prompt, the user rejects an expired intermediate certificate.
Exploitability
AV:NAC:HPR:NUI:NScope
S:UImpact
C:LI:LA:N4.8/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N