CVE-2026-27831 | THREATINT

Description

rldns is an open source DNS server. Version 2.3 has a heap-based out-of-bounds read that leads to denial of service. Version 1.4 contains a patch for the issue.

PUBLISHED Reserved 2026-02-24 | Published 2026-02-26 | Updated 2026-02-26 | Assigner GitHub_M

HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-125: Out-of-bounds Read

Product status

= 1.3

affected

References

github.com/.../rldns/security/advisories/GHSA-fv38-45j4-g9x4 exploit

github.com/.../rldns/security/advisories/GHSA-fv38-45j4-g9x4

github.com/...out-of-bounds-vulnerability-fixed-in-rldns-1.4

github.com/...y/rldns_archives/blob/main/diff/rldns-1.4.diff

medium.com/...r-read-vulnerability-in-rldns-1-3-5da3bccdc031

cve.org (CVE-2026-27831)

nvd.nist.gov (CVE-2026-27831)

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