Description
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.
Published: 2026-07-29
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 29 Jul 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Codesys profinet
Vendors & Products Codesys profinet

Wed, 29 Jul 2026 07:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Out-of-bounds Write in CODESYS PROFINET Controller
First Time appeared Codesys
Codesys codesys Profinet
Weaknesses CWE-787
CPEs cpe:2.3:a:codesys:codesys_profinet:*:*:*:*:*:*:*:*
Vendors & Products Codesys
Codesys codesys Profinet
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Codesys Codesys Profinet Profinet
cve-icon MITRE

Status: PUBLISHED

Assigner: CERTVDE

Published:

Updated: 2026-07-29T07:05:57.508Z

Reserved: 2026-04-01T19:54:21.499Z

Link: CVE-2026-35226

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-29T08:30:04Z

Weaknesses