CVE-2026-32854

HIGH

7.5

Descricao

LibVNCServer versions 0.9.15 and prior (fixed in commit dc78dee) contain null pointer dereference vulnerabilities in the HTTP proxy handlers within httpProcessInput() in httpd.c that allow remote attackers to cause a denial of service by sending specially crafted HTTP requests. Attackers can exploit missing validation of strchr() return values in the CONNECT and GET proxy handling paths to trigger null pointer dereferences and crash the server when httpd and proxy features are enabled.

Detalhes CVE

Pontuacao CVSS v3.17.5

SeveridadeHIGH

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

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado3/24/2026

Ultima modificacao3/25/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

libvncserver_project:libvncserver

Fraquezas (CWE)

CWE-476

Referencias

https://github.com/LibVNC/libvncserver/commit/dc78dee51a7e270e537a541a17befdf2073f5314(disclosure@vulncheck.com)

https://github.com/LibVNC/libvncserver/security/advisories/GHSA-xjp8-4qqv-5x4x(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/libvncserver-httpd-proxy-null-pointer-dereference(disclosure@vulncheck.com)

Correlacoes IOC

Sem correlacoes registradas

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