CVE-2021-36765
HIGHCODESYS EtherNetIP < 4.1.0.0 - Null Pointer Dereference via EtherNet/IP Requests
Title source: llmDescription
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.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16806&token=3b0c51de5a6e35bccbb413ddaaa56551ca5490f6&download=
Scores
CVSS v3
7.5
EPSS
0.0099
EPSS Percentile
58.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-476
Status
published
Products (1)
codesys/ethernetip
< 4.1.0.0
Published
Aug 04, 2021
Tracked Since
Feb 18, 2026