CVE-2026-32854 (GCVE-0-2026-32854)

Vulnerability from cvelistv5 – Published: 2026-03-24 17:31 – Updated: 2026-07-14 18:40
VLAI
Title
LibVNCServer httpd proxy NULL Pointer Dereference
Summary
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.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-27 03:52 UTC
CWE
  • CWE-476 - NULL pointer dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
LibVNC LibVNCServer Affected: 0 , ≤ 0.9.15 (semver)
Unaffected: dc78dee51a7e270e537a541a17befdf2073f5314 (git)
    cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc.
Show details on NVD website
To clipboard 

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