Denial of Service Vulnerability in MaraDNS by Samiam
CVE-2026-40719

7.5HIGH

Key Information:

Vendor

Maradns

Status
Maradns
Vendor
CVE Published:
15 April 2026

What is CVE-2026-40719?

The vulnerability in MaraDNS 3.5.0036 allows malicious actors to deplete connection slots, rendering the DNS service unavailable. This can occur when a zone's authoritative nameserver address fails to resolve, leading to potential service disruption and impacting network reliability.

Affected Version(s)

MaraDNS 3.5.0036

References

https://github.com/samboy/MaraDNS/security/advisories/GHS...
https://maradns.samiam.org/changelog.html

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.