Codesys Plchandler vulnerabilities

CVE-2026-76992 [HIGH] CWE-770 CVE-2026-76992: The CODESYS Gateway Client allocates memory based on a size field in a gateway response without enfo The CODESYS Gateway Client allocates memory based on a size field in a gateway response without enforcing an appropriate upper limit. An unauthenticated remote attacker controlling a malicious gateway can exploit this behavior to trigger excessive memory consumption, resulting in a denial-of-service condition thus leading to a total loss of availablit

CVE-2018-20026 [HIGH] CVE-2018-20026: Improper Communication Address Filtering exists in CODESYS V3 products versions prior V3.5.14.0. Improper Communication Address Filtering exists in CODESYS V3 products versions prior V3.5.14.0.

CVE-2021-29242 [HIGH] CWE-20 CVE-2021-29242: CODESYS Control Runtime system before 3.5.17.0 has improper input validation. Attackers can send cra CODESYS Control Runtime system before 3.5.17.0 has improper input validation. Attackers can send crafted communication packets to change the router's addressing scheme and may re-route, add, remove or change low level communication packages.

CVE-2022-31805 [HIGH] CWE-523 CVE-2022-31805: In the CODESYS Development System multiple components in multiple versions transmit the passwords fo In the CODESYS Development System multiple components in multiple versions transmit the passwords for the communication between clients and servers unprotected.