A heap-based buffer over-read was discovered in the "acc_ua_get_be32" function in "miniacc.h" in UPX 4.0.0 via a crafted Mach-O file. NOTE: The affected package is not available in a package manager we support.
CWE-125 - Out-of-Bounds Read
Out-of-bounds read is a vulnerability that allows access to memory beyond the authorized accessible location. Such a vulnerability compromises the confidentiality of the trusted environment in the application and enables an attacker to launch further attacks by leveraging the exposed information.