External risk intelligence

EasyFlow .NET Insecure Deserialization Remote Code Execution.

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-102455

EasyFlow .NET is a business process management application typically deployed as a web-based service. In many organizational deployments, such web applications are configured to be accessible over the network to facilitate user access, making them a likely target for remote, internet-based interaction.

Deserialization

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

EasyFlow .NET has a critical vulnerability that could allow unauthenticated attackers to execute arbitrary code on servers. This issue stems from insecure deserialization, meaning attackers can send specially crafted data to compromise the system without needing any credentials. The primary concern is confirming if your environment uses this technology and is exposed.

Attackers can run code on servers.
It affects business process management software.
Confirm relevance and exposure.

Attack Path

How an attacker could exploit the issue

An unauthenticated attacker can exploit this vulnerability by sending specially crafted serialized data over the network to the EasyFlow .NET application. This data triggers the insecure deserialization flaw, allowing the attacker to execute arbitrary code on the server.

Entry condition: Network exposure required.
Trigger point: Sending malicious serialized content.
Resulting risk: Arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

An unauthenticated remote attacker could execute arbitrary code on a server running EasyFlow .NET by sending specially crafted serialized data. This could affect the confidentiality, integrity, and availability of the affected server.

Server code execution.
Attacker sends crafted serialized data.
Compromise of server data and services.

Operational Fix

Recommended remediation, mitigation, and detection steps

Digiwin's EasyFlow .NET, a business process management application, is susceptible to insecure deserialization. This vulnerability allows unauthenticated remote attackers to execute arbitrary code on the server. Given its typical deployment as a web-based service accessible over the network, it's crucial to identify all instances of this application, confirm their exposure and business criticality, and then coordinate with the vendor and application owners for remediation.

Identify application and system owners.
Verify network exposure and business criticality.
Plan vendor-coordinated remediation.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is EasyFlow .NET?

EasyFlow .NET is a business process management (BPM) application developed by Digiwin. Organizations use this software to automate workflows, manage documents, and streamline internal business processes. Because it functions as a web-based service, it typically serves as a central hub for organizational operations, requiring continuous network availability to support employee access and process management.

What does insecure deserialization mean for CVE-2026-102455?

This vulnerability is classified as CWE-502, which occurs when an application trustingly processes serialized data from an outside source. Instead of just reading the data as intended, the software inadvertently executes instructions hidden within that malicious input. In the context of CVE-2026-102455, this flaw allows an attacker to bypass security checks and run arbitrary code directly on the server hosting the application.

How do attackers trigger this vulnerability?

An attacker triggers this flaw by sending specifically formatted, malicious serialized data to the EasyFlow .NET application over the network. Crucially, the attacker does not need to provide valid credentials or log in to the system to initiate the attack. Simply sending the malformed data packet to an accessible application instance is enough to potentially compromise the server.

Why should I care if my EasyFlow .NET instance is internet-facing?

According to Halo Surface Signal, this software is typically deployed as a web service, making internet-facing instances a primary target for remote threats. Because this vulnerability does not require authentication, any instance reachable from the public internet provides a direct path for attackers to interact with and potentially take control of the server without needing to bypass standard login hurdles.

How should I respond if I use EasyFlow .NET?

Begin by creating an inventory of all servers running EasyFlow .NET and identifying the internal stakeholders responsible for them. Verify whether these instances are accessible via the network and assess their business impact. Once mapped, coordinate directly with Digiwin and your internal application owners to confirm the availability of patches or specific configuration guidance to mitigate this risk.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.