External risk intelligence

DVP-12SE11T Password Protection Bypass Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2025-15102

The affected product is a programmable logic controller (PLC). While these industrial devices are typically deployed within internal operational technology networks, they are sometimes exposed to the internet or reachable via industrial gateways in certain deployment configurations, making internet reachability possible though not the standard design for typical operations.

Deltaww Dvp 12se11t Firmware

before 2.16

Halo Surface Signal: 3 out of 5 — possibly public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory concerns a critical vulnerability in Delta DVP-12SE11T devices, a type of industrial control equipment. The vulnerability allows for a bypass of password protection, potentially granting unauthorized access to the device's functions. While these devices are typically used within secure operational networks, there's a possibility of external exposure in some configurations, making its relevance a key concern.

  • Password protection can be bypassed on this device.
  • Confirms relevance and exposure to determine impact.
  • Understand potential unauthorized access to industrial systems.

Attack Path

How an attacker could exploit the issue

An attacker can bypass the password protection of the DVP-12SE11T device without needing any prior access or authentication. This bypass allows them to gain unauthorized administrative control over the device, which could lead to a complete compromise of its functionalities.

  • No authentication required for access.
  • Password bypass triggers vulnerability.
  • Full device control.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in the DVP-12SE11T allows an unauthenticated attacker to bypass password protection when supported by the advisory. This could potentially lead to unauthorized access and control over the device's functions.

  • Unauthorized access to device functions.
  • Network access can bypass password protection.
  • Service may be disrupted or compromised.

Operational Fix

Recommended remediation, mitigation, and detection steps

The DVP-12SE11T, a programmable logic controller, is susceptible to a critical password protection bypass vulnerability. Given its nature as an industrial device, responsibility likely lies with the operational technology (OT) infrastructure or platform teams managing the industrial control system (ICS) environment. The immediate priority is to identify all instances of this device, assess their network exposure and criticality, and then coordinate with vendor management if necessary to plan remediation during a scheduled maintenance window.

  • OT and platform teams should own the issue.
  • Verify network exposure and business criticality.
  • Plan remediation based on risk assessment.

Supplementary metadata

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.

Frequently asked questions

What is the Delta DVP-12SE11T?

The DVP-12SE11T is a Programmable Logic Controller (PLC) manufactured by Delta. These industrial devices act as the brains for automated machinery and manufacturing processes, managing inputs and outputs to control physical equipment. They are essential components in operational technology environments where they perform real-time computing tasks to maintain industrial workflows.

What does CVE-2025-15102 mean for security?

This vulnerability is classified as an authentication bypass (CWE-288). It means that a security mechanism intended to protect the device—its password requirement—can be effectively ignored. By exploiting this weakness, an unauthorized party can gain administrative access to the controller without ever providing valid credentials, essentially circumventing the device's primary gatekeeper.

How is the password protection bypassed?

An attacker can trigger this vulnerability by sending specially crafted network requests to the device. Crucially, the attacker does not need prior authentication or a user account to initiate the bypass. Simply interacting with the device over the network is sufficient to gain unauthorized control; however, standard, non-malicious network traffic to the device does not inherently trigger this issue.

Should I be concerned about my DVP-12SE11T?

Yes, if your device is accessible via a network. According to Halo Surface Signal, while PLCs are designed for internal industrial networks, they are sometimes reachable via industrial gateways or direct internet exposure. If your device has a path to the internet or is reachable from a broader corporate network, the risk of remote unauthorized access increases significantly.

What is the first step to address this?

Begin by creating an inventory of all DVP-12SE11T units in your environment to identify which are deployed. Evaluate their network connectivity to see if they are reachable from non-essential zones. Once mapped, coordinate with your operational technology or infrastructure teams to review the available vendor guidance and schedule the necessary firmware updates during your next planned maintenance window.

References