Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users. (Citation: Sucuri BIND9 August 2015) Some systems may automatically restart critical applications and services when crashes occur, but they can likely be re-exploited to cause a persistent denial of service (DoS) condition.

Adversaries may exploit known or zero-day vulnerabilities to crash applications and/or systems, which may also lead to dependent applications and/or systems to be in a DoS condition. Crashed or restarted applications or systems may also have other effects such as [Data Destruction](https://attack.mitre.org/techniques/T1485), [Firmware Corruption](https://attack.mitre.org/techniques/T1495), [Service Stop](https://attack.mitre.org/techniques/T1489) etc. which may further cause a DoS condition and deny availability to critical information, applications and/or systems. 
Application or System Exploitation
source_name: mitre-attack  url: https://attack.mitre.org/techniques/T1499/004  external_id: T1499.004     source_name: Sucuri BIND9 August 2015  description: Cid, D.. (2015, August 2). BIND9 – Denial of Service Exploit in the Wild. Retrieved April 26, 2019.  url: https://blog.sucuri.net/2015/08/bind9-denial-of-service-exploit-in-the-wild.html     