CVE-2026-35226
Out-of-bounds Write in CODESYS PROFINET Controller
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | codesys |
| Product | codesys profinet |
| Published | Jul 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
CODESYS / CODESYS PROFINET
4.4.0.0 < 4.8.0.0
References
Credits
ABB