CVE-2026-27831

EUVD-2026-8787
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub_MCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4
https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4
https://github.com/bluedragonsecurity/rldns_archives/blob/main/diff/rldns-1.4.diff
https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031