Acunetix Web Vulnerability Scanner (WVS) 4.0 Build 20060717 and earlier allows remote attackers to cause a denial of service (application crash) via multiple HTTP requests containing invalid Content-Length values.
https://www.exploit-db.com/exploits/3078
https://exchange.xforce.ibmcloud.com/vulnerabilities/31279
https://euvd.enisa.europa.eu/vulnerability/EUVD-2007-0124