Erik de Jong, member of the AXIS OS Bug Bounty Program, has found that the VAPIX API ftptest.cgi did not have a sufficient input validation allowing for a possible command injection leading to being able to transfer files from/to the Axis device. This flaw can only be exploited after authenticating with an administrator-privileged service account. Axis has released patched AXIS OS versions for the highlighted flaw. Please refer to the Axis security advisory for more information and solution.
The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.