CVE-2026-23751
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.
- Score
- CVSS 3.1 9.8 Critical
- Status
- Awaiting Analysis - disclosure@vulncheck.com
- Published
- 2026-04-23
- Last modified
- 2026-10-26
- Weaknesses
- CWE-306, CWE-441
Affected products
References
- https://gist.github.com/VAMorales/3888941d6e5efdd4b2e673e999f68ca2
- https://docshield.tungstenautomation.com/Portal/Products/en_US/KC/11.1.0-40hy9nfk91/KC.htm
- https://www.vulncheck.com/advisories/kofax-capture-unauthenticated-file-read-write-smb-coercion-via-net-remoting
