CVE-2023-49203

Name: CVE-2023-49203
Creator: NVD / NIST
Published: 2024-09-18T15:15:14.513+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2023-49203 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Technitium 11.5.3 allows remote attackers to cause a denial of service (bandwidth amplification) because the DNSBomb manipulation causes accumulation of low-rate DNS queries such that there is a large-sized response in a burst of traffic.. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

Technitium 11.5.3 allows remote attackers to cause a denial of service (bandwidth amplification) because the DNSBomb manipulation causes accumulation of low-rate DNS queries such that there is a large-sized response in a burst of traffic.

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

0.65%

46.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-406

Affected Software

Vendor	Product	Versions
Technitium	Dnsserver	11.5.3

References

https://gist.github.com/idealeer/89947ca07836fd0f7e9761198ca9a0f3.Broken Link
https://technitium.com/dns/Product

Timeline

Published: Sep 18, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-49203?

How severe is CVE-2023-49203?

CVE-2023-49203 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2023-49203?

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-2023-49203?

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

Scan your code now

Source: NVD / NIST