The former pro Niclas “Pengu” Mouritzen is one of the best players in the world in Rainbow Six Siege. Recently, he revealed that many pros have been exploiting a bug in the tactical shooter. A week later, Ubisoft announced that the flaw would be fixed.
This is the story:
- Pros in Rainbow Six have allegedly exploited a bug for years that gave them an advantage.
- No one was supposed to report the bug for fear it would then be fixed – it was just too useful.
- A former pro has now reported the bug, and it should be removed in a few weeks.
“5 minutes of testing” ends years of bug
What kind of exploit is this? Due to a glitch, it is possible in Rainbow Six Siege to suppress the sound when preparing a fragmentation grenade or C4. Both explosives are typically instantly lethal.
Usually, a sound indicates that an opponent is deploying the corresponding gadget – like the characteristic clicking when the pin is pulled from a grenade. Sound plays an enormous role in Rainbow Six, as movements, reloading, or grenades indicate where opponents are and what they are doing.
By suppressing the noises, players were able to completely rob opponents of their reaction time and catch them off guard. According to Pengu, nearly every pro took advantage of this reproducible bug without reporting it. After all, it was a significant advantage.
However, after he ended his career himself and has not played for the well-known e-sports team G2 since March, he forwarded the bug to Ubisoft.
What happens now: Ubisoft employee Eric Pope has now confirmed that the bug will be fixed in the upcoming update Y6S2.2 (Year 6, Season 2.2). The update will be released “sometime in the next few weeks” (via Twitter.com).
Pengu himself writes: “If you report a bug with a video of reproduction, it will be taken care of. A three-year-old bug will be fixed after five minutes of testing in a private game” (via Twitter.com).
Fairer matches in Rainbow Six without the bug?
At least among pros, the exploit is said to have been widespread. How many players were aware of it is hard to say. For most matches, the bug fix will likely have minimal impact – if any, then among the top-tier players.
However, E-sports may become somewhat more exciting because strong amateur teams that were unaware of the exploit now have slightly better chances against the pros.

Rainbow Six Siege: How to watch the German League
All information, announcements, and streaming plans for the major German-speaking GSA league.
Sometimes, this tiny chance is enough to turn a match around. Amateurs and pros are currently competing against each other in the ongoing GSA League 2021, the e-sports tournament for Germany, Austria, and Switzerland. There, newcomers are vying for a spot in the EU League, the professional sector of Rainbow Six.