The Gunners saw off the Tigers on Tuesday night to book a home quarter-final tie against Watford.
David Meyler's dreadful backpass allowed Olivier Giroud to open the scoring three minutes before half time, and three goals in the final 19 minutes - Giroud's second and a brace from Theo Walcott - added gloss to the scoreline.
It was far from an easy ride for the Gunners, however, who were struggling to break down the Tigers until Meyler gifted them the breakthrough.
What will be of most concern to Wenger and the club's fans, however, is that the victory may have come at a dire cost to their Premier League title challenge.
Per Mertesacker, Gabriel Paulista, and Aaron Ramsey were all substituted after suffering injuries, the Welsh international having to be withdrawn just 15 minutes after coming on as a substitute himself.
After the match, Gunners players took to Twitter to celebrate the victory and progression to the quarter-finals, with Mesut Ozil also expressing his hope for a quick comeback for the trio of casualties from the match.
Calum Chambers (@CalumChambers95) March 8, 2016
Joel Campbell (@joel_campbell12) March 8, 2016
Mohamed ELNeny (@ElNennyM) March 9, 2016
Meanwhile, there was further reason for optimism for Arsenal fans as Spanish midfielder Santi Cazorla shared a video of himself working hard to build up his fitness.
The 31-year-old has not played since injuring his knee ligaments in November, but recently confirmed that he is targeting a return to action by the start of April.