Vulnerability Details CVE-2026-32854
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 51.3%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2026-32854
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.10
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.11
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.12
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.13
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.4
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.5
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.6
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.7
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.8
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.8.1
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.8.2
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cpe:2.3:a:libvncserver_project:libvncserver:0.9.9