High severity7.5NVD Advisory· Published Oct 3, 2019· Updated Jun 17, 2026
CVE-2019-16866
CVE-2019-16866
Description
Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the query must match an access-control rule.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5- cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
- Unbound/Unbounddescription
Patches
Vulnerability mechanics
References
7- nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txtnvdPatchVendor Advisory
- usn.ubuntu.com/4149-1/nvdThird Party Advisory
- github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/ChangelognvdProductRelease Notes
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/nvd
- seclists.org/bugtraq/2019/Oct/23nvd
- www.debian.org/security/2019/dsa-4544nvd
News mentions
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