CVE-2026-42389

Summary

This fix provides extra hardening for the 5.4.x branch by doing extra validation of incoming answers from authoritative servers.

Affected Software

VendorProductVersion RangeStatus
PowerDNSRecursor5.4.0 < 5.4.3affected

Weaknesses

  • Improper Input Validation

ADP Enrichment

CISA ADP Vulnrichment

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

References