CVE 2013-6765

OpenVAS Manager 3.0 before 3.0.7 and 4.0 before 4.0.4 allows remote attackers to bypass the OMP authentication restrictions and execute OMP commands via a crafted OMP request for version information, which causes the state to be set to CLIENT_AUTHENTIC, as demonstrated by the omp_xml_handle_end_element function in omp.c.

See the CVE page on Mitre.org for more details.