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An out‑of‑bounds write vulnerability in the CODESYS PROFINET Controller allows an unauthenticated attacker on the same network segment to send malformed PROFINET communication data that triggers an e…

Medium CVSS 6.5
CVECVE-2026-35226
First seen2026-07-29 08:30 UTC
Disclosed2026-07-29 08:16 UTC
Last updated2026-07-29 08:30 UTC
Channel statusauto

Summary

An out‑of‑bounds write vulnerability in the CODESYS PROFINET Controller allows an unauthenticated attacker on the same network segment to send malformed PROFINET communication data that triggers an exception in the affected PLC application. The exception is handled by the CODESYS Control runtime system and results in a controlled stop of the PLC application.

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Lint boundary warnings (1)

The following non-blocking warnings were raised during the lint phase of this triage (e.g. reference URLs not yet on the allowlist). They do not affect entry usability and are disclosed for transparency (see DR-002).

  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://www.certvde.com/en/advisories/VDE-2026-041/

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD