libclamav in ClamAV (aka Clam AntiVirus) as used in Advanced Malware Protection (AMP) on Cisco Email Security Appliance (ESA) devices before 9.7.0-125 and Web Security Appliance (WSA) devices before 9.0.1-135 and 9.1.x before 9.1.1-041 allows remote attackers to cause a denial of service (AMP process restart) via a crafted document aka Bug IDs CSCuv78533 and CSCuw60503.