External risk intelligence

Delta DVP-12SE11T Out-of-Bounds Memory Write Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2025-15359

The product is an industrial programmable logic controller (PLC) component. While network-reachable, such devices are typically deployed within isolated industrial control networks or behind firewalls. Direct exposure to the public internet is considered an unusual configuration rather than a standard deployment pattern.

Out-of-bounds Write

Deltaww Dvp 12se11t Firmware

before 2.16

Halo Surface Signal: 2 out of 5 — less likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory concerns a critical vulnerability found in a specific industrial control component that could allow unauthorized access and manipulation if exploited. The main concern is to confirm if this technology is in use and potentially exposed.

Memory flaw in industrial control component.
Critical flaw could impact operations.
Confirm relevance and exposure.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending specially crafted network traffic to the vulnerable device. This could allow them to overwrite memory in an uncontrolled way, potentially leading to the execution of arbitrary code.

No authentication required to attack.
Triggered via network communication.
Leads to code execution and system compromise.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an attacker to impact the availability and integrity of the DVP-12SE11T device by writing data outside of its intended memory boundaries. This could disrupt normal operations and potentially allow for unauthorized code execution when the device is accessible over a network without authentication.

Device integrity and availability.
Network access allows data overwrite.
Disruption of critical industrial processes.

Operational Fix

Recommended remediation, mitigation, and detection steps

This critical vulnerability in the DVP-12SE11T firmware requires immediate attention. The primary responsibility for remediation likely falls to infrastructure or platform teams managing industrial control systems, with potential involvement from network security teams to assess external exposure. The first crucial step is to identify all instances of the affected device, determine its network reachability and business criticality, and then identify the accountable owner to plan remediation.

Own: Infrastructure or platform teams.
Verify: Device reachability and criticality.
Action: Plan risk-based remediation.

Supplementary metadata

CVSS vector

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Frequently asked questions

What is the Delta DVP-12SE11T?

The DVP-12SE11T is a programmable logic controller (PLC) from Delta Electronics. These devices are used in industrial automation environments to control machinery and manufacturing processes by monitoring inputs and triggering outputs based on programmed logic.

What does CVE-2025-15359 mean?

This vulnerability is an out-of-bounds memory write, categorized as CWE-787. In plain terms, the software fails to properly check data boundaries when processing network traffic, allowing an attacker to write data into memory areas that should be protected, which can corrupt system operations or trigger unintended code execution.

How is this vulnerability triggered?

An attacker triggers this flaw by sending specially crafted network packets to the device. Because the system does not require authentication to process these requests, the bug can be activated remotely. It is not triggered by standard, authorized control commands or routine network monitoring traffic.

Is my device at risk?

According to Halo Surface Signal, the DVP-12SE11T is typically deployed in isolated industrial control networks or behind firewalls, making direct public internet exposure unusual. However, if your specific unit is configured to be reachable from untrusted networks, the risk level increases significantly due to the lack of required authentication for an attack.

What should I do to address this?

Your first step is to inventory all DVP-12SE11T devices in your environment. Once identified, verify their network placement to confirm if they are isolated or exposed. Work with your infrastructure team to assess the business impact and prioritize firmware updates for all affected units to prevent unauthorized memory manipulation.

References

filecenter.deltaww.com/news/download/doc/Delta-PCSA-2025-00022_DVP-12SE11T%2…

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.