Description

The device's PROFINET service is affected by a buffer overflow vulnerability that exists in the default configuration. An unauthenticated remote attacker could exploit this vulnerability to reboot the device or execute arbitrary code.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.8",
  "pubDate": "2026-08-12T08:17:11.590Z",
  "pubdate": "2026-08-12T08:17:11.590Z",
  "executiveSummary": "A buffer overflow vulnerability has been identified within the PROFINET service of the affected device, present in the default configuration. This critical security flaw exposes industrial control systems to severe compromise by allowing remote, unauthenticated threat actors to interact directly with the vulnerable network protocol handler. Successful exploitation of this vulnerability can lead to catastrophic operational disruptions, including the complete denial of service via device reboots, or the execution of arbitrary code with the underlying privileges of the PROFINET service. The presence of this vulnerability in the default configuration significantly elevates the risk profile of deployed devices, as attackers require no prior authentication, credentials, or specialized network positioning beyond reachability over the PROFINET communication channel. Given the industrial nature of the protocol, exploitation could result in process termination, equipment downtime, or a complete loss of visibility and control over industrial automation processes. Remediation requires strict network segmentation, firewall filtering of PROFINET traffic, and applying vendor-supplied updates or hardening configurations to prevent unauthorized remote interaction.",
  "technicalDetails": "The vulnerability is rooted in an insecure buffer handling implementation within the PROFINET service parser, specifically failing to adequately bound-check incoming protocol data packets before writing them to allocated memory buffers. When the PROFINET service processes maliciously crafted network packets, an excess of input data overflows the fixed-size buffer, overwriting adjacent memory regions on the stack or heap.\nThe attack flow begins when an unauthenticated remote attacker transmits a specially crafted PROFINET packet targeting the vulnerable service running on the device. Because the service listens in the default configuration without enforcing authentication mechanisms, the malicious payload is accepted and processed by the vulnerable component. As the service attempts to parse the oversized input, the lack of rigorous length validation causes the input data to spill past the boundaries of the intended buffer.\nDepending on the nature of the overflow and the memory layout, this memory corruption can be leveraged in two primary ways. First, overwriting critical control data structures or instruction pointers enables the execution of arbitrary machine code supplied within the attacker's payload. Second, corrupting vital execution state data can intentionally induce a crash, triggering an immediate device reboot and resulting in a denial-of-service condition.\nThe attack requires network exposure to the PROFINET service, typically operating over specific industrial Ethernet ports. No user interaction, pre-existing credentials, or elevated privileges are required by the attacker to initiate the attack sequence. The post-exploitation impact ranges from temporary service interruption through system crashes to full remote code execution, granting the adversary persistent control over the affected industrial device."
}