CVE-2020-19860: Nlnetlabs Ldns

Medium severity, CVSS 6.5. EPSS: 1.3% chance of exploitation in the next 30 days.

When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read vulnerability. An attacker can leak information on the heap by constructing a zone file payload.

Affected products

• Nlnetlabs Ldns: version 1.7.1 only

Published 2022-01-21. Last modified 2026-06-17.