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VULNERABILITIES

CVE-2026-32854 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/LibVNC/libvncserver/commit/dc78dee51a7e270e537a541a17befdf2073f5314 [email protected]Patch
https://github.com/LibVNC/libvncserver/security/advisories/GHSA-xjp8-4qqv-5x4x [email protected]ExploitVendor Advisory
https://www.vulncheck.com/advisories/libvncserver-httpd-proxy-null-pointer-dereference [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-476NULL Pointer Dereference[email protected]

Affected Products

ProductVersions
libvncserver project libvncserver
< 0.9.15

CPE

  • cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-32854
NVD Published Date:
Mar 24, 2026
NVD Last Modified:
Jul 14, 2026
Source:
[email protected]
CVE-2026-32854 Details - Not Deferred