The McAfee VirusScan Console (mcconsol.exe) in McAfee Active Response (MAR) before 1.1.0.161, Agent (MA) 5.x before 5.0.2 Hotfix 1110392 (5.0.2.333), Data Exchange Layer 2.x (DXL) before 2.0.1.140.1, Data Loss Prevention Endpoint (DLPe) 9.3 before Patch 6 and 9.4 before Patch 1 HF3, Device Control (MDC) 9.3 before Patch 6 and 9.4 before Patch 1 HF3, Endpoint Security (ENS) 10.x before 10.1, Host Intrusion Prevention Service (IPS) 8.0 before 8.0.0.3624, and VirusScan Enterprise (VSE) 8.8 before P7 (8.8.0.1528) on Windows allows local administrators to bypass intended self-protection rules and disable the antivirus engine by modifying registry keys.

The AV engine before DAT 5600 in McAfee VirusScan, Total Protection, Internet Security, SecurityShield for Microsoft ISA Server, Security for Microsoft Sharepoint, Security for Email Servers, Email Gateway, and Active Virus Defense allows remote attackers to bypass virus detection via (1) an invalid Headflags field in a malformed RAR archive, (2) an invalid Packsize field in a malformed RAR archive, or (3) an invalid Filelength field in a malformed ZIP archive.