CVE-2026-81642criticalCWE-122

CVE-2026-81642: fallo crítico en NLnet Labs Unbound

Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY

Publicada el

Seguir esta CVE+ Monitorear Unbound+ Monitorear unbound

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

48Vexday Risk Score

Sin señal de explotación. Ella tiene prueba de concepto pública.

ssvc Attendcvss 9.1epss 1.0%
de la publicación al arma2 días
Publicada en NVD16 sept
1ª PoC+2d
In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in the DNSSEC validator that enables denial of service and possible remote code execution as a result of digesting DNSKEYs. A DNSKEY with an owner compression pointer to its own RDATA can overflow the digest buffer. Remote code execution is possible through attacker controlled data. An adversary can exploit the vulnerability by controlling a malicious zone and querying a vulnerable Unbound.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Red
Productos afectados
NLnet Labs · Unbound
PoCs públicas encontradas — 1
githubgithub.com/suominen/CVE-2026-81642★ 0
⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
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