What’s Vulnerable › Vulnerabilities
CVE-2023-3669: CODESYS: Missing Brute-Force protection in CODESYS Development System
- Severity: low (CVSS 3.3 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: 2023-08-03 · updated 2026-06-17
- Weakness: CWE-307
Description
A missing Brute-Force protection in CODESYS Development System prior to 3.5.19.20 allows a local attacker to have unlimited attempts of guessing the password within an import dialog.
Affected products
- CODESYS Development System: before 3.5.19.20 — fixed in 3.5.19.20
How to fix
Upgrade to a fixed version: CODESYS Development System 3.5.19.20. Check the vendor advisory for mitigations.
References
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