CVE-2022-4048: CODESYS V3 prone to Inadequate Encryption Stregth

Severity: high (CVSS 7.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-05-15 · updated 2026-06-17
Weakness: CWE-326

Description

Inadequate Encryption Strength in CODESYS Development System V3 versions prior to V3.5.18.40 allows an unauthenticated local attacker to access and manipulate code of the encrypted boot application.

Affected products

CODESYS Development System V3: before 3.5.18.40 — fixed in 3.5.18.40

How to fix

Upgrade to a fixed version: CODESYS Development System V3 3.5.18.40. Check the vendor advisory for mitigations.

References

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17350&token=2cee62285d3ec76d6a78dfa9b9e81e66f6136a2a&download=
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17350&token=2cee62285d3ec76d6a78dfa9b9e81e66f6136a2a&download=

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