CVE-2021-36765

—

CVSS 3.1

7.5 high

EPSS

<1%p60

Published

Aug 4, 2021 (Aug 4, 2021)

Modified

Jun 17, 2026

Description

In CODESYS EtherNetIP before 4.1.0.0, specific EtherNet/IP requests may cause a null pointer dereference in the downloaded vulnerable EtherNet/IP stack that is executed by the CODESYS Control runtime system.

Vendors: codesys
Products: ethernetip
Weakness: CWE-476
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (1.0%)

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