PT-2026-65721 · Codesys · Codesys Profinet

CVE-2026-35226 · Published 2026-07-29 · Updated 2026-07-29

NVD

CVSS v3.1

6.5

Medium

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-35226

Affected Products

Codesys Profinet

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-35226 · Security Note
• https://certvde.com/en/advisories/VDE-2026-041 · Note