CVE-2016-5427
7.5
HIGH
CVSS 3.1
EPSS 85.5%
Description
PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . (dot) inside labels, which allows remote attackers to cause a denial of service (backend CPU consumption) via a crafted DNS query.
How to fix CVE-2016-5427
To remediate CVE-2016-5427, upgrade the affected package to a fixed version below.
- Debian/pdns—upgrade to 4.0.0~alpha1-1 or later
Is CVE-2016-5427 being exploited?
Likely — EPSS is 85.5%, placing CVE-2016-5427 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (1)
- from 0, < 4.0.0~alpha1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |