CVE-2026-32854

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.

Affected Software

VendorProductVersion RangeStatus
LibVNCLibVNCServer0 <= 0.9.15affected
LibVNCLibVNCServerdc78dee51a7e270e537a541a17befdf2073f5314unaffected

Weaknesses

  • CWE-476: CWE-476 NULL pointer dereference

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: yes
    • Technical Impact: partial

References