Netentsec NS-ASG Application Security Gateway deleteiscuser.php sql injection

A vulnerability, which was classified as critical, has been found in Netentsec NS-ASG Application Security Gateway 6.3. This issue affects some unknown processing of the file /protocol/iscuser/deleteiscuser.php. The manipulation of the argument messagecontent leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-267455. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.