The CAB file parser in Emsisoft Anti-Malware 5.1.0.1, Sophos Anti-Virus 4.61.0, and Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0 allows remote attackers to bypass malware detection via a CAB file with a modified reserved3 field. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different CAB parser implementations.