Knox Arkeia server 4.2, and possibly other versions, installs its root user with a null password by default, which allows local and remote users to gain privileges.

The arkeiad daemon in the Arkeia Backup Agent in Western Digital Arkeia 11.0.12 and earlier allows remote attackers to bypass authentication and execute arbitrary commands via a series of crafted requests involving the ARKFSEXECCMD operation.

Knox Arkeia server 4.2, and possibly other versions, uses a constant salt when encrypting passwords using the crypt() function, which makes it easier for an attacker to conduct brute force password guessing.

Arkeia Network Backup Client 5.x contains hard-coded credentials that effectively serve as a back door, which allows remote attackers to access the file system and possibly execute arbitrary commands.

Arkeia backup server 4.2.8-2 and earlier creates its database files with world-writable permissions, which could allow local users to overwrite the files or obtain sensitive information.

Buffer overflow in (1) nlservd and (2) rnavc in Knox Software Arkeia backup product allows local users to obtain root access via a long HOME environmental variable.

Arkiea nlservd allows remote attackers to conduct a denial of service.