CVE-2026-33602 | THREATINT

Description

A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.

PUBLISHED Reserved 2026-03-23 | Published 2026-04-22 | Updated 2026-04-22 | Assigner OX

MEDIUM: 6.5CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

Problem types

Heap-based Buffer Overflow

Product status

Default status

unaffected

1.9.0 (semver) before 1.9.13

affected

2.0.0 (semver) before 2.0.4

affected

Credits

ylwango613 finder

References

www.dnsdist.org/...owerdns-advisory-for-dnsdist-2026-04.html

cve.org (CVE-2026-33602)

nvd.nist.gov (CVE-2026-33602)

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