7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.166 Low
EPSS
Percentile
95.9%
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.
github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog
launchpad.net/bugs/cve/CVE-2019-16866
nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt
nvd.nist.gov/vuln/detail/CVE-2019-16866
security-tracker.debian.org/tracker/CVE-2019-16866
ubuntu.com/security/notices/USN-4149-1
www.cve.org/CVERecord?id=CVE-2019-16866
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.166 Low
EPSS
Percentile
95.9%