CVE-2026-32854

HIGH

7.5

Description

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.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/24/2026

Derniere modification3/25/2026

Sourcenvd

Observations honeypot0

Produits affectes

libvncserver_project:libvncserver

Faiblesses (CWE)

CWE-476

References

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)

Correlations IOC

Aucune correlation enregistree

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