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CVE-2026-42004 (GCVE-0-2026-42004)

Vulnerability from cvelistv5 – Published: 2026-06-25 12:24 – Updated: 2026-06-25 13:44
VLAI
Title
EDNS options smuggling
Summary
An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist’s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend to see the EDNS option(s) that DNSdist did not filter.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-25 13:44 UTC
CWE
  • Misinterpretation of Input
  • CWE-115 - Misinterpretation of Input
Assigner
References
Impacted products
Vendor Product Version CPE status
PowerDNS DNSdist Affected: 1.9.0 , < 1.9.15 (semver)
Affected: 2.0.0 , < 2.0.7 (semver)
guessed Create a notification for this product.
Date Public
2026-06-24 22:00
Credits
Vitaly Simonovich
Show details on NVD website
To clipboard 

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