Vicious Frost is additive with similar mods. For example, a Galatine with a max rank Vicious Frost and Melee Prowess will have a 20% × (1 + 60% + 90%) = 50% status chance.
Can be stacked with Melee Prowess, Volcanic Edge, Voltaic Strike, Virulent Scourge, and Drifting Contact for a 370% increase in Status Chance. On weapons with at least 22% base Status Chance, this allows them to achieve a total Status Chance value of 100%, allowing every strike to deal Status Effect procs.
All of the dual-stat event mods for melee weapons have names starting with the letter V.
Vicious Frost was originally named Cold Touch before it was changed in Hotfix 14.5.2 (2014-09-03) to match the theme of having the Elemental Damage + Status Chance melee mods starting with the letter V.