CVE-2019-5105

An exploitable memory corruption vulnerability exists in the Name Service Client functionality of 3S-Smart Software Solutions CODESYS GatewayService. A specially crafted packet can cause a large memcpy, resulting in an access violation and termination of the process. An attacker can send a packet to a device running the GatewayService.exe to trigger this vulnerability. All variants of the CODESYS V3 products in all versions prior V3.5.16.10 containing the CmpRouter or CmpRouterEmbedded component are affected, regardless of the CPU type or operating system: CODESYS Control for BeagleBone, CODESYS Control for emPC-A/iMX6, CODESYS Control for IOT2000, CODESYS Control for Linux, CODESYS Control for PLCnext, CODESYS Control for PFC100, CODESYS Control for PFC200, CODESYS Control for Raspberry Pi, CODESYS Control RTE V3, CODESYS Control RTE V3 (for Beckhoff CX), CODESYS Control Win V3 (also part of the CODESYS Development System setup), CODESYS Control V3 Runtime System Toolkit, CODESYS V3 Embedded Target Visu Toolkit, CODESYS V3 Remote Target Visu Toolkit, CODESYS V3 Safety SIL2, CODESYS Edge Gateway V3, CODESYS Gateway V3, CODESYS HMI V3, CODESYS OPC Server V3, CODESYS PLCHandler SDK, CODESYS V3 Simulation Runtime (part of the CODESYS Development System).

• CWE-119
• CWE-787

• https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=13077&token=3bfc6d1d08415a6260b96093520071f5786e7fd4&download=
• https://talosintelligence.com/vulnerability_reports/TALOS-2019-0897Exploit, Third Party Advisory
• https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=13077&token=3bfc6d1d08415a6260b96093520071f5786e7fd4&download=
• https://talosintelligence.com/vulnerability_reports/TALOS-2019-0897Exploit, Third Party Advisory

Published

Mar 26, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2019-5098An exploitable out-of-bounds read vulnerability exists in AM…8.6
• CVE-2019-5099An exploitable integer underflow vulnerability exists in the…7.8
• CVE-2019-5100An exploitable integer overflow vulnerability exists in the …7.8
• CVE-2019-5101An exploitable information leak vulnerability exists in the …5.9
• CVE-2019-5102An exploitable information leak vulnerability exists in the …5.9
• CVE-2019-5104Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2019-5106A hard-coded encryption key vulnerability exists in the auth…5.5
• CVE-2019-5107A cleartext transmission vulnerability exists in the network…7.5
• CVE-2019-5108An exploitable denial-of-service vulnerability exists in the…6.5
• CVE-2019-5109Exploitable SQL injection vulnerabilities exists in the auth…8.8
• CVE-2019-5110Exploitable SQL injection vulnerabilities exist in the authe…8.8
• CVE-2019-5111Exploitable SQL injection vulnerability exists in the authen…8.8