CVE-2021-45117

medium

Description

The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.

References

https://www.youtube.com/watch?v=qv-RBdCaV4k

https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-45117.pdf

https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-31899

https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdf

Details

Source: Mitre, NVD

Published: 2022-03-21

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.01417