CVE-2009-1755: Nlnetlabs Nsd

Medium severity, CVSS 5.0. EPSS: 3.2% chance of exploitation in the next 30 days.

Off-by-one error in the packet_read_query_section function in packet.c in nsd 3.2.1, and process_query_section in query.c in nsd 2.3.7, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors that trigger a buffer overflow.

Affected products

• Nlnetlabs Nsd: version 2.0.0 only; version 2.0.1 only; version 2.0.2 only; version 2.1.0 only; version 2.1.1 only; version 2.1.2 only; …

Published 2009-05-22. Last modified 2026-06-16.