CVE-2026-3039: fallo de gravedad alta en ISC BIND 9
BIND 9 server memory exhaustion during GSS-API TKEY negotiation
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.5epss 1.1%
BIND servers that are configured to use TKEY-based authentication via GSS-API tokens are vulnerable to excessive memory consumption when receiving and processing maliciously-constructed packets. Typically these servers will be found in Active Directory integrated DNS deployments and/or Kerberos-secured DNS environments.
This issue affects BIND 9 versions 9.0.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.9.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Productos afectados
ISC · BIND 9CVEs relacionadas — ISC BIND 9
En el mismo producto, de las más peligrosas a las menos.
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Referencias
https://access.redhat.com/errata/RHSA-2026:20334https://access.redhat.com/errata/RHSA-2026:23360https://access.redhat.com/errata/RHSA-2026:24338https://access.redhat.com/errata/RHSA-2026:24339https://access.redhat.com/errata/RHSA-2026:24367https://access.redhat.com/errata/RHSA-2026:24368https://access.redhat.com/errata/RHSA-2026:55441https://access.redhat.com/errata/RHSA-2026:57189https://access.redhat.com/errata/RHSA-2026:60383https://access.redhat.com/errata/RHSA-2026:62549https://access.redhat.com/errata/RHSA-2026:65851https://access.redhat.com/security/cve/CVE-2026-3039