CVE-2023-28451

7.5 highEPSS 0.5%

High (7.5) in technitium dnsserver. EPSS 0.5% chance of exploitation in the next 30 days.

An issue was discovered in Technitium 11.0.2. There is a vulnerability (called BadDNS) in DNS resolving software, which triggers a resolver to ignore valid responses, thus causing DoS (denial of service) for normal resolution. The effects of an exploit would be widespread and highly impactful, because the attacker could just forge a response targeting the source port of a vulnerable resolver without the need to guess the correct TXID.

Severity

CVSS 3.1

7.5 high

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
CWE: CWE-400
Published: 2024-09-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

technitium:dnsserver

References

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

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