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Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes…

High CVSS 7.5
CVECVE-2026-5946
First seen2026-07-23 12:30 UTC
Disclosed2026-05-20 13:16 UTC
Last updated2026-07-23 12:30 UTC
Channel statusauto

Summary

Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data — can cause assertion failures in `named`. This issue af…

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

  • :
Lint boundary warnings (4)

The following non-blocking warnings were raised during the lint phase of this triage (e.g. reference URLs not yet on the allowlist). They do not affect entry usability and are disclosed for transparency (see DR-002).

  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://downloads.isc.org/isc/bind9/9.18.49
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://downloads.isc.org/isc/bind9/9.20.23
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://downloads.isc.org/isc/bind9/9.21.22
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://kb.isc.org/docs/cve-2026-5946

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD