CVE-2019-25037: Debian Linux

High severity, CVSS 7.5. EPSS: 2.2% chance of exploitation in the next 30 days.

Unbound before 1.9.5 allows an assertion failure and denial of service in dname_pkt_copy via an invalid packet. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited

Affected products

  • Debian Debian Linux: version 9.0 only
  • Nlnetlabs Unbound: before 1.9.5 (fixed in 1.9.5)

Published 2021-04-27. Last modified 2026-06-17.