CVE-2019-16866
unbound - security update
7.5
HIGH
CVSS 3.1
EPSS 1.2%
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.
How to fix CVE-2019-16866
To remediate CVE-2019-16866, upgrade the affected package to a fixed version below.
- Alpine/unbound—upgrade to 1.9.1-r3 or later
- —upgrade to 1.9.4-1 or later
- —upgrade to 1.9.0-2+deb10u1 or later
Is CVE-2019-16866 being exploited?
Low — EPSS is 1.2%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.9.1-r3
- from 0, < 1.9.4-1
- from 0, < 1.9.0-2+deb10u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |