CVE-2023-46317

Name: CVE-2023-46317
Creator: NVD / NIST
Published: 2023-10-22T23:15:08.02+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2023-46317 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.64%

46.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Nic	Knot Resolver	< 5.7.0

References

https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1448Patch, Release Notes
https://www.knot-resolver.cz/2023-08-22-knot-resolver-5.7.0.htmlRelease Notes
https://gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1448Patch, Release Notes
https://www.knot-resolver.cz/2023-08-22-knot-resolver-5.7.0.htmlRelease Notes

Timeline

Published: Oct 22, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-46317?

Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.

How severe is CVE-2023-46317?

CVE-2023-46317 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2023-46317?

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-2023-46317?

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

Scan your code now

Source: NVD / NIST