On April 20 2022 the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vulnerability in CHM file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an unauthenticated remote attacker to cause a denial of service condition on an affected device. For a description of this vulnerability see the ClamAV blog. This advisory will be updated as additional information becomes available.