He was a young child on the throne, and real power was held by his regent Emir Qawsun, a senior aid to Kujuk's father Sultan an-Nasir Muhammad (r. 1310–41).
When Qawsun was ousted in a mamluk revolt in late December 1341, Kujuk was deposed in the weeks after.
[1][2] In August 1341, Kujuk, then five or six, was installed as sultan by the strongman of Egypt, Emir Qawsun, who served as his regent and in effect, held the reins of power.
[3] Kujuk was removed from the throne on 21 January 1342 and replaced by his elder half-brother an-Nasir Ahmad after Qawsun was ousted and killed in a mamluk revolt.
[4] After his deposition, Kujuk returned to the care of his mother in the women's quarters in the Cairo Citadel.