CVE-2026-32854

Published: Mar 24, 2026 Last Modified: Mar 24, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

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.

476

NULL Pointer Dereference

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability Integrity Confidentiality
Potential Impacts:
Dos: Crash, Exit, Or Restart Execute Unauthorized Code Or Commands Read Memory Modify Memory
Applicable Platforms
Languages: C, C#, C++, Go, Java
Likelihood of Exploit: Medium
View CWE Details
https://github.com/LibVNC/libvncserver/commit/dc78dee51a7e2…
https://github.com/LibVNC/libvncserver/commit/dc78dee51a7e270e537a541a17befdf20…
https://github.com/LibVNC/libvncserver/security/advisories/…
https://github.com/LibVNC/libvncserver/security/advisories/GHSA-xjp8-4qqv-5x4x
https://www.vulncheck.com/advisories/libvncserver-httpd-pro…
https://www.vulncheck.com/advisories/libvncserver-httpd-proxy-null-pointer-dere…