There is an infinite loop in the nextchar function in compscan.c in ncurses 6.0, related to libtic. A crafted input will lead to a remote denial of service attack.

Stack-based buffer overflow in the ncwriteentry function in tinfo/writeentry.c in ncurses 6.0 allows attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted terminfo file, as demonstrated by tic.

In ncurses 6.0, there is a NULL Pointer Dereference in the ncparseentry function of tinfo/parseentry.c. It could lead to a remote denial of service attack if the terminfo library code is used to process untrusted terminfo data.

In ncurses 6.0, there is an attempted 0xffffffffffffffff access in the appendacs function of tinfo/parseentry.c. It could lead to a remote denial of service attack if the terminfo library code is used to process untrusted terminfo data.