CVE-2026-40012

Summary

ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;

Affected Software

VendorProductVersion RangeStatus
PowerDNSRecursor5.2.0 < 5.2.11affected
PowerDNSRecursor5.3.0 < 5.3.8affected
PowerDNSRecursor5.4.0 < 5.4.3affected

Weaknesses

  • Exposure of Resource to Wrong Sphere

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References