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Gearbox Investigates Borderlands 4 Vex “Infinite Damage” Exploit

A Penetrator‑augmented throwing knife interacting with Vex’s Bloodletter and Contamination passives triggers a recursive critical‑bleed loop.

Overview

  • Players are using the combo to delete bosses in seconds, with demonstrations showing effective one-shots even on Ultimate Vault Hunter Rank 5.
  • Content creator NickTew showcased damage numbers in the billions and noted the setup works even with a lower‑level knife because the augment effect is static.
  • The required Vampiric Vivisecting Throwing Knife with the Penetrator augment is a rare drop, with community guides pointing to Splashzone as a reliable farming spot.
  • Co‑op viability appears limited as overlapping bleeds from multiple users can overwrite each other, reducing or breaking the effect.
  • Creative director Graeme Timmins says the team will not knee‑jerk patch but is investigating due to similarities with a prelaunch recursive damage bug that caused crashes and UI freezes, with no fix announced yet.