The DNS server for Cisco Content Service Switch (CSS) 11000 and 11500, when prompted for a nonexistent AAAA record, responds with response code 3 (NXDOMAIN or "Name Error") instead of response code 0 ("No Error"), which allows remote attackers to cause a denial of service (inaccessible domain) by forcing other DNS servers to send and cache a request for a AAAA record to the vulnerable server.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This vulnerability has a 2.11% probability of being exploited in the next 30 days, ranking higher than 81% of all scored CVEs.