CVE-2026-23751 PUBLISHED

Kofax Capture 6.0.0.0 Unauthenticated File Read/Write & SMB Coercion via .NET Remoting

Assigner: VulnCheck
Reserved: 15.01.2026 Published: 23.04.2026 Updated: 23.04.2026

Kofax Capture, now referred to as Tungsten Capture, version 6.0.0.0 (other versions may be affected) exposes a deprecated .NET Remoting HTTP channel on port 2424 via the Ascent Capture Service that is accessible without authentication and uses a default, publicly known endpoint identifier. An unauthenticated remote attacker can exploit .NET Remoting object unmarshalling techniques to instantiate a remote System.Net.WebClient object and read arbitrary files from the server filesystem, write attacker-controlled files to the server, or coerce NTLMv2 authentication to an attacker-controlled host, enabling sensitive credential disclosure, denial of service, remote code execution, or lateral movement depending on service account privileges and network environment.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Product Status

Vendor Tungsten Automation
Product Kofax Capture
Versions Default: unknown
  • Version 6.0.0.0 is affected

Credits

  • Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp. finder
  • VulnCheck coordinator

References

Problem Types

  • CWE-306 Missing Authentication for Critical Function CWE
  • CWE-441 Unintended Proxy or Intermediary ('Confused Deputy') CWE