The host is installed with TeamViewer versions before 8.x before 8.0.258861, 9.x before 9.0.258860, 10.x before 10.0.258873, 11.x before 11.0.258870, 12.x before 12.0.258869, 13.x before 13.2.36220, 14.x before 14.7.48350 or 15.x before 15.8.3 and is prone to an improper URL handling vulnerability. The flaw is present in Application which fails to handle custom URI. Successful exploitation allows an attacker to force a victim to send an NTLM authentication request and either relay the request or capture the hash for offline password cracking.