CVE-2026-3104

Memory leak in code preparing DNSSEC proofs of non-existence

CVSS 7.5 HIGHEPSS 0.6%CWE-772

Vexday Risk Score

21Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 7.5EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Ciclo de vida

25 mar 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain. This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1. BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Productos afectados

ISC · BIND 9

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Referencias

https://downloads.isc.org/isc/bind9/9.20.21 https://downloads.isc.org/isc/bind9/9.21.20 https://kb.isc.org/docs/cve-2026-3104