CVE-2003-1132: Cisco Content Services Switch 11000
Medium severity, CVSS 5.0. EPSS: 2.1% chance of exploitation in the next 30 days.
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.
Affected products
Published 2003-12-31. Last modified 2026-06-16.