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.

INFO

Published Date :

2026-03-24T17:31:32.011Z

Last Modified :

2026-03-27T03:52:19.164Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-32854 vulnerability.

Vendors Products
Libvncserver
  • Libvncserver
Libvncserver Project
  • Libvncserver
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-32854.

URL Resource
https://github.com/LibVNC/libvncserver/commit/dc78dee51a7e270e537a541a17befdf2073f5314 cve-icon cve-icon cve-icon
https://github.com/LibVNC/libvncserver/security/advisories/GHSA-xjp8-4qqv-5x4x cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-32854 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-32854 cve-icon
https://www.vulncheck.com/advisories/libvncserver-httpd-proxy-null-pointer-dereference cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact