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TI-2026-29388 Aliases CVE-2026-40719GHSA-8wr7-69hr-44pw

Deadwood in MaraDNS 3.5.0036 allows attackers to exhaust connection slots via a zone…

Priority HIGH 72CWE-670Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Deadwood in MaraDNS 3.5.0036 allows attackers to exhaust connection slots via a zone whose authoritative nameserver address cannot be resolved.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00375 31st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MaraDNSMaraDNS3.5.0036—No fix listedCNA
  • MaraDNS VendorMaraDNS Affected 3.5.0036 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-40719
  2. 2026-10-03 Alias added: GHSA-8wr7-69hr-44pw

References

Other 2

  • TI-2023-14847 MaraDNS Integer Underflow Vulnerability in DNS Packet Decompression CVSS 3.1HIGH 7.5
  • TI-2022-12502 An issue was discovered in MaraDNS Deadwood through 3.5.0021 that allows variant V1 of… CVSS 3.1HIGH 7.5
  • TI-2011-00447 The compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03, 1.4.05, and… CVSS 2.0HIGH 7.5
  • TI-2012-00024 MaraDNS before 1.3.07.12 and 1.4.x before 1.4.08 computes hash values for DNS data… CVSS 2.0HIGH 7.8
  • TI-2007-03013 Multiple memory leaks in server/MaraDNS.c in MaraDNS before 1.2.12.06, and 1.3.x before… CVSS 2.0HIGH 7.8
  • TI-2004-00727 Multiple implementations of the DNS protocol, including (1) Poslib 1.0.2-1 and earlier as… CVSS 2.0MEDIUM 5.0
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences