CVE-2019-13952: Gdnsd

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

The set_ipv6() function in zscan_rfc1035.rl in gdnsd before 2.4.3 and 3.x before 3.2.1 has a stack-based buffer overflow via a long and malformed IPv6 address in zone data.

Affected products

• Gdnsd Gdnsd: before 2.4.3 (fixed in 2.4.3); from 3.0.0, before 3.2.1 (fixed in 3.2.1)

Published 2019-07-18. Last modified 2026-06-17.