This was addressed in the errata

Wand of Paralysis (p. 211). The third and fourth sentences now read as follows: “The target must succeed on a DC 15 Constitution saving throw or be paralyzed for 1 minute.”

This was addressed in the errata

Wand of Paralysis (p. 211). The third and fourth sentences now read as follows: “The target must succeed on a DC 15 Constitution saving throw or be paralyzed for 1 minute.”

The text above replaces the below...

Make a ranged attack roll against that creature using your spell attack bonus. On a hit, the target is paralyzed for 1 minute.

Please see the errata for this...

Wand of Paralysis (p. 211). The third and fourth sentences now read as follows: “The target must succeed on a DC 15 Constitution saving throw or be paralyzed for 1 minute.”

This was addressed in the errata

Wand of Paralysis (p. 211). The third and fourth sentences now read as follows: “The target must succeed on a DC 15 Constitution saving throw or be paralyzed for 1 minute.”