How severe is CVE-2023-28456?

CVE-2023-28456 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-28456 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28456?

CVE-2023-28456 affects Technitium Dnsserver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28456?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-28456 have an EU (EUVD) identifier?

Yes. CVE-2023-28456 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-32137.

When was CVE-2023-28456 published?

CVE-2023-28456 was published on 2024-09-18 and last updated on 2026-06-17.

CVE-2023-28456

CVE-2023-28456 is a high-severity vulnerability in Technitium Dnsserver with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-406.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-32137
Weakness: CWE-406
Affected product: Technitium Dnsserver
Published: 2024-09-18
Last modified: 2026-06-17

Description

An issue was discovered in Technitium through 11.0.2. It enables attackers to launch amplification attacks (3 times more than other "golden model" software like BIND) and cause potential DoS.

Frequently asked questions

What is CVE-2023-28456?: An issue was discovered in Technitium through 11.0.2. It enables attackers to launch amplification attacks (3 times more than other "golden model" software like BIND) and cause potential DoS.
How severe is CVE-2023-28456?: CVE-2023-28456 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-28456 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28456?: CVE-2023-28456 affects Technitium Dnsserver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28456?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-28456 have an EU (EUVD) identifier?: Yes. CVE-2023-28456 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-32137.
When was CVE-2023-28456 published?: CVE-2023-28456 was published on 2024-09-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:technitium:dnsserver:*:*:*:*:*:*:*:*

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CVE-2023-28455 — High (CVSS 7.5): An issue was discovered in Technitium through 11.0.2. The forwarding mode enables attackers to create a query loop…
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