CVE-2026-27831

Summary

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.

Affected Software

Weaknesses

• CWE-125: CWE-125: Out-of-bounds Read

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: partial

Additional References

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

References

• https://github.com/bluedragonsecurity/rldns/security/advisories/GHSA-fv38-45j4-g9x4
• https://github.com/bluedragonsecurity/rldns-1.3-heap-out-of-bounds-vulnerability-fixed-in-rldns-1.4
• 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

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