The host is installed with Mozilla Firefox before 39.0, Firefox ESR 38.x before 38.1, Thunderbird before 31.8 or 38.x before 38.1 and is prone to multiple unspecified vulnerabilities. The flaws are present in the applications, which fail to handle unknown vectors. Successful exploitation could allow attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code.