CVE-2018-10920

Name: CVE-2018-10920
Creator: NVD / NIST
Published: 2018-08-02T13:29:00.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 3.24%

Last modified Jun 17, 2026

CVE-2018-10920 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. Improper input validation bug in DNS resolver component of Knot Resolver before 2.4.1 allows remote attacker to poison cache.. EPSS estimates a 3.24% chance of exploitation in the next 30 days.

Description

Improper input validation bug in DNS resolver component of Knot Resolver before 2.4.1 allows remote attacker to poison cache.

Metrics

CVSS 3.1

6.8/10

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

EPSS Probability

3.24%

86.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nic	Knot Resolver	< 2.4.1

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10920Issue Tracking, Third Party Advisory
https://www.knot-resolver.cz/2018-08-02-knot-resolver-2.4.1.htmlVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10920Issue Tracking, Third Party Advisory
https://www.knot-resolver.cz/2018-08-02-knot-resolver-2.4.1.htmlVendor Advisory

Timeline

Published: Aug 2, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-10920?

Improper input validation bug in DNS resolver component of Knot Resolver before 2.4.1 allows remote attacker to poison cache.

How severe is CVE-2018-10920?

CVE-2018-10920 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 3.24% probability of exploitation in the next 30 days.

How do I fix CVE-2018-10920?

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-2018-10920?

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

Scan your code now

Source: NVD / NIST