APC UPS daemon, apcupsd, saves its process ID in a world-writable file, which allows local users to kill an arbitrary process by specifying the target process ID in the apcupsd.pid file.

Multiple buffer overflows in apcupsd before 3.8.6, and 3.10.x before 3.10.5, may allow attackers to cause a denial of service or execute arbitrary code, related to usage of the vsprintf function.

APC Network Management Card 4 Path Traversal via Directory Traversal

APC Network Management Card 4 contains a path traversal vulnerability that allows unauthenticated attackers to access sensitive system files by manipulating URL parameters. Attackers can exploit directory traversal techniques to read critical system files like /etc/passwd by using encoded path traversal characters in HTTP requests.