CVE-2019-3806

Name: CVE-2019-3806
Creator: NVD / NIST
Published: 2019-01-29T17:29:00.287+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.46%

Last modified Jun 17, 2026

CVE-2019-3806 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. An issue has been found in PowerDNS Recursor versions after 4.1.3 before 4.1.9 where Lua hooks are not properly applied to queries received over TCP in some specific combination of settings, possibly bypassing security policies enforced using Lua.. EPSS estimates a 1.46% chance of exploitation in the next 30 days.

Description

An issue has been found in PowerDNS Recursor versions after 4.1.3 before 4.1.9 where Lua hooks are not properly applied to queries received over TCP in some specific combination of settings, possibly bypassing security policies enforced using Lua.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.46%

70.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-358

Affected Software

Vendor	Product	Versions
Powerdns	Recursor	>= 4.1.4, < 4.1.9

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3806Issue Tracking, Third Party Advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2019-01.htmlVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3806Issue Tracking, Third Party Advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2019-01.htmlVendor Advisory

Timeline

Published: Jan 29, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-3806?

How severe is CVE-2019-3806?

CVE-2019-3806 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.46% probability of exploitation in the next 30 days.

How do I fix CVE-2019-3806?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-3806?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST