What is CVE-2024-56089?

CVE-2024-56089 is a high-severity vulnerability in Technitium Dnsserver, classified under Use of Insufficiently Random Values. CVSS score: 7.5/10. Published 2025-12-01.

How severe is CVE-2024-56089?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Technitium Dnsserver

CVE-2024-56089

An issue in Technitium through v13.2.2 enables attackers to conduct a DNS cache poisoning attack and inject fake responses by reviving the birthday attack.

Published 2025-12-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (23.5th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000

Affected products

Technitium Dnsserver

Weakness classification (CWE)

CWE-330 — Use of Insufficiently Random Values

References

technitium.com/dns/ (Product)
github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md (Release Notes)

Frequently asked questions

What is CVE-2024-56089?: CVE-2024-56089 is a high-severity vulnerability in Technitium Dnsserver, classified under Use of Insufficiently Random Values. CVSS score: 7.5/10. Published 2025-12-01.
How severe is CVE-2024-56089?: High severity. CVSS v3 base score is 7.5 out of 10.