What’s Vulnerable › Vulnerabilities
CVE-2023-3663: CODESYS: Missing integrity check in CODESYS Development System
- Severity: high (CVSS 8.8 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: 2023-08-03 · updated 2026-06-17
- Weakness: CWE-940
Description
In CODESYS Development System versions from 3.5.11.20 and before 3.5.19.20 a missing integrity check might allow an unauthenticated remote attacker to manipulate the content of notifications received via HTTP by the CODESYS notification server.
Affected products
- CODESYS Development System: from 3.5.11.20 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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