CVE-2021-33486

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-08-03 · updated 2026-06-17
Weakness: CWE-755

Description

All versions of the CODESYS V3 Runtime Toolkit for VxWorks from version V3.5.8.0 and before version V3.5.17.10 have Improper Handling of Exceptional Conditions.

Affected products

CODESYS Runtime Toolkit: from 3.5.8.0 before 3.5.17.10 — fixed in 3.5.17.10

How to fix

Upgrade to a fixed version: CODESYS Runtime Toolkit 3.5.17.10. Check the vendor advisory for mitigations.

References

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14806&token=637e12e86301b83beac1653bd88da3aa5aa3f51b&download=
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14806&token=637e12e86301b83beac1653bd88da3aa5aa3f51b&download=

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