CVE-2025-34414
Published: 09 December 2025
Summary
CVE-2025-34414 is a critical-severity Missing Authentication for Critical Function (CWE-306) vulnerability in Entrust Instant Financial (inferred from references). Its CVSS base score is 9.3 (Critical).
Operationally, ranked in the top 20.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
Entrust Instant Financial Issuance (IFI) On Premise software, formerly known as CardWizard, versions 5.x prior to 6.10.5 and prior to 6.11.1 contain an insecure .NET Remoting exposure in the Legacy Remoting Service that is enabled by default. The service registers a TCP remoting channel using SOAP and binary formatters at TypeFilterLevel=Full and exposes default ObjectURI endpoints such as logfile.rem, photo.rem, cwPhoto.rem, and reports.rem on a network-reachable port. This stems from missing authentication controls and unsafe deserialization, as indicated by the associated CWEs.
A remote unauthenticated attacker who can reach the remoting port can invoke the exposed objects to read arbitrary files from the server and coerce outbound authentication. The exposure may further allow arbitrary file writes and remote code execution through established .NET Remoting techniques, resulting in disclosure of sensitive installation and service-account data along with full compromise of the affected host. The vulnerability carries a CVSS 4.0 score of 9.3 reflecting network-accessible attack complexity that requires no privileges or user interaction.
Entrust advisory E25-008 and related notices direct customers to upgrade to the fixed releases 6.10.5 or 6.11.1. The referenced VulnCheck advisory reinforces that the legacy service should be disabled or firewalled where upgrades are not immediately feasible. The EPSS score remains low, with a current value of 0.0127 and a peak of 0.0153.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-202182
Vulnerability details
Entrust Instant Financial Issuance (IFI) On Premise software (formerly referred to as CardWizard) versions 5.x, prior to 6.10.5, and prior to 6.11.1 contain an insecure .NET Remoting exposure in the Legacy Remoting Service that is enabled by default. The service…
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registers a TCP remoting channel with SOAP and binary formatters configured at TypeFilterLevel=Full and exposes default ObjectURI endpoints such as logfile.rem, photo.rem, cwPhoto.rem, and reports.rem on a network-reachable remoting port. A remote, unauthenticated attacker who can reach the remoting port can invoke exposed remoting objects to read arbitrary files from the server and coerce outbound authentication, and may achieve arbitrary file write and remote code execution via known .NET Remoting exploitation techniques. This can lead to disclosure of sensitive installation and service-account data and compromise of the affected host.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requires established identification and authentication to unlock, mitigating missing authentication for continued system access.
Requiring identification and rationale for actions allowed without authentication ensures critical functions are not left unprotected by forcing review of authentication requirements.
Authorizing mobile device connections to organizational systems ensures authentication is performed for this critical access function.
Guarantees critical functions are protected by mandatory invocation of the access control mechanism.
Auditing sessions makes it possible to detect access to critical functions without required authentication.
The assessment process confirms authentication is present and effective for critical functions, preventing exploitation from missing authentication.
Certification assesses that critical functions have required authentication controls in place.
Penetration testing supplies malicious serialized objects, detecting unsafe deserialization and supporting corrective actions.