CVE Watch16 sept 2026

CVE-2026-19662

An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for

CVSS

5.9

Medio

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 16 sept 2026 · Última mod.: 16 sept 2026 · CWE-416

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for a DNSSEC-signed zone hosted by an authoritative server under the control of the attacker. If the auth responds with a particular sequence of crafted answers, and those answers arrive in a particular order with particular timing, the `named` resolver will encounter a use-after-free bug, and abort. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

Referencias oficiales

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———On a resolver configured to use ``dns64``, if an applicable answer from the authoritative server is malformed in a specific way, the resolver `named` process will exit unexpectedly. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.5h CVE-2026-827205.9 MED

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