There was a Memory Corruption issue discovered in multiple models of Axis IP Cameras which allows remote attackers to cause a denial of service (crash) by sending a crafted command which will result in a code path that calls the UND undefined ARM instruction.
https://www.axis.com/files/sales/ACV-128401_Affected_Product_List.pdf
https://www.axis.com/files/faq/Advisory_ACV-128401.pdf
https://blog.vdoo.com/2018/06/18/vdoo-discovers-significant-vulnerabilities-in-axis-cameras/