The remote web server is affected by a memory corruption vulnerability.
According to the self-reported version in the server response header, the installed nginx version is 1.5.10. It is, therefore, affected by a memory corruption vulnerability. A flaw exists with the SPDY module implementation, where worker process memory could be corrupted via a specially crafted request. This could allow a remote attacker to execute arbitrary code. Note that Nessus has not tested for this issue or otherwise determined if a patch is applied but has instead relied only on the application's self-reported version number.
Apply the patch manually or upgrade to nginx 1.5.11 or later.