CVE-2026-4893

MEDIUM

5.3

Descricao

An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information.

Detalhes CVE

Pontuacao CVSS v3.15.3

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado5/11/2026

Ultima modificacao5/12/2026

Fontenvd

Avistamentos honeypot0

Referencias

https://github.com/NixOS/nixpkgs/pull/519082(cret@cert.org)

https://github.com/NixOS/nixpkgs/pull/519093(cret@cert.org)

https://github.com/pi-hole/FTL/releases/tag/v6.6.2(cret@cert.org)

https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html(cret@cert.org)

https://thekelleys.org.uk/dnsmasq/CVE/(cret@cert.org)

https://www.kb.cert.org/vuls/id/471747(cret@cert.org)

Correlacoes IOC

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