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Denial of Service in Delta Electronics DVP-12SE11T PLC

IdentifiersCVE-2025-15358CWE-20· Improper Input Validation

CVE-2025-15358 is a high-severity denial-of-service vulnerability in the Delta Electronics DVP-12SE11T programmable logic controller (PLC). According to the provided reporting, the flaw is caused by insufficient validation in memory-handling functionality. A remote, unauthenticated attacker can send crafted network traffic that triggers the vulnerable code path and causes the PLC to freeze. The condition persists until defenders perform recovery actions. The affected device is used in industrial environments, including sensitive sectors such as water treatment and food and beverage processing, which increases the operational significance of the issue.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can render the PLC unresponsive, interrupting control of industrial processes and potentially causing operational downtime. In OT environments, loss of controller availability can affect process continuity and safety, and may contribute to unsafe physical conditions depending on the deployment. The provided content specifically states that the device can be frozen until recovery actions are taken.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not feasible, reduce exposure of the PLC by restricting network access to trusted engineering and control hosts only, segmenting the device within industrial network zones, and preventing direct exposure to untrusted or external networks. Apply allowlisting and firewall rules for required protocols only, monitor for malformed or unexpected traffic to the PLC, and ensure operators have documented recovery procedures in case a device freeze occurs.

Remediation

Patch, then assume compromise.

Delta Electronics released firmware updates addressing CVE-2025-15358 shortly before the 2026 New Year. The primary remediation is to identify affected DVP-12SE11T PLCs and apply the vendor-provided fixed firmware in accordance with OT change-management and testing requirements.
PUBLIC EXPLOITS

Exploits

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VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

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VendorProductType
DeltawwDvp-12se11t Firmwareoperating_system

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity7

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