P4Verified

CVE-2019-16866: unbound before 1.9.4 (exclusive); +2 more affected products

CVE-2019-16866. CVSS 3.1 base score 7.5 (HIGH, NVD). EPSS 0.03506 (percentile 0.88863), scored 2026-10-08.

Affected technology

unbound · before 1.9.4 (exclusive)
nlnetlabs

ubuntu linux · 19.04
canonical

n/a · n/a
Vendor not specified by the source

Description’s affected range: before 1.9.4 accesses uninitialized memory, which

Component: Not specified by the source

Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Remote attackers can trigger a crash via a crafted NOTIFY query. NVD’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high.

Published 2026-10-09 03:15:28.842708+00:00

CWE: CWE-755, CWE-908
CCR priority: 30.9 /100 (P4)
CVSS 3.1: 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · NVD
EPSS: 0.03506 · percentile 0.88863 · 2026-10-08
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-09 03:13:32.966430+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2019-16866.html