CVE-2026-123584: Hickory-DNS 0.26.0 before 0.26.2 UDP Client Denial of Service via Spoofed Responses
Fixed in 0.26.2 · Affected: hickory-dns before 0.26.2 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 31% of scored CVEs
DescriptionCVE.org
The hickory-net crate in Hickory DNS 0.26.0 before 0.26.2 stops listening and returns an error when a client UDP connection receives a datagram that cannot be parsed as a DNS message. Remote attackers who guess the query's source port, without knowing the transaction ID, can spoof malformed responses to abort client queries, causing denial of service.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- hickory-dns · hickory-dnsfrom 0.26.0 before 0.26.2
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- hickory-dns
- Published
- November 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-123584 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.