This indicates an attack attempt against a Buffer Overflow vulnerability in GNU Wget.
The vulnerability is caused by an error when the vulnerable software handles a maliciously crafted HTTP response. A remote attacker may be able execute arbitrary code on the target system by tricking the user to send a HTTP request to the vulnerable software.
GNU wget prior to 1.19.2
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.