Unspecified vulnerability in the browser engine in Mozilla Firefox 3.5.x before 3.5.19 and 3.6.x before 3.6.17 Thunderbird before 3.1.10 and SeaMonkey before 2.0.14 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors a different vulnerability than CVE-2011-0072 CVE-2011-0074 CVE-2011-0077 and CVE-2011-0078.