CVE-2026-27831

HIGH

7.5

Description

rldns is an open source DNS server. Version 1.3 has a heap-based out-of-bounds read that leads to denial of service. Version 1.4 contains a patch for the issue.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/26/2026

Last Modified2/27/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-125

References

https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4(security-advisories@github.com)

https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4(security-advisories@github.com)

https://github.com/bluedragonsecurity/rldns_archives/blob/main/diff/rldns-1.4.diff(security-advisories@github.com)

https://medium.com/@w1sdom/heap-based-buffer-over-read-vulnerability-in-rldns-1-3-5da3bccdc031(security-advisories@github.com)

https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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