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If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although the…

High CVSS 7.5
CVECVE-2026-1519
First seen2026-07-20 13:16 UTC
Disclosed2026-03-25 14:16 UTC
Last updated2026-07-20 13:16 UTC
Channel statusauto

Summary

If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the resolver may consume excessive CPU. Authoritative-only servers are generally unaffected, although there are circumstances where authoritative servers may make recursive queries (see: https://kb.isc.org/docs/why-does-my-authoritative-server-make-recursive-queries). This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.46, 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, 9.11.…

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/bind9/9.18.47
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://downloads.isc.org/isc/bind9/9.20.21
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://downloads.isc.org/isc/bind9/9.21.20
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://kb.isc.org/docs/cve-2026-1519

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD