CVE-2023-23451

The Flexi Classic and Flexi Soft Gateways SICK UE410-EN3 FLEXI ETHERNET GATEW. with serial number <=2311xxxx all Firmware versions, SICK UE410-EN1 FLEXI ETHERNET GATEW. with serial number <=2311xxxx all Firmware versions, SICK UE410-EN3S04 FLEXI ETHERNET GATEW. with serial number <=2311xxxx all Firmware versions, SICK UE410-EN4 FLEXI ETHERNET GATEW. with serial number <=2311xxxx all Firmware versions, SICK FX0-GENT00000 FLEXISOFT EIP GATEW. with serial number <=2311xxxx with Firmware <=V2.11.0, SICK FX0-GMOD00000 FLEXISOFT MOD GATEW. with serial number <=2311xxxx with Firmware <=V2.11.0, SICK FX0-GPNT00000 FLEXISOFT PNET GATEW. with serial number <=2311xxxx with Firmware <=V2.12.0, SICK FX0-GENT00030 FLEXISOFT EIP GATEW.V2 with serial number <=2311xxxx all Firmware versions, SICK FX0-GPNT00030 FLEXISOFT PNET GATEW.V2 with serial number <=2311xxxx all Firmware versions and SICK FX0-GMOD00010 FLEXISOFT MOD GW with serial number <=2311xxxx with Firmware <=V2.11.0 all have Telnet enabled by factory default. No password is set in the default configuration.

• CWE-477
• CWE-306

• https://sick.com/psirtVendor Advisory
• https://sick.com/psirtVendor Advisory

Published

Apr 19, 2023

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-2023-23446Improper Access Control in SICK FTMg AIR FLOW SENSOR with Pa…7.5
• CVE-2023-23447Uncontrolled Resource Consumption in SICK FTMg AIR FLOW SENS…7.5
• CVE-2023-23448Inclusion of Sensitive Information in Source Code in SICK FT…5.3
• CVE-2023-23449Observable Response Discrepancy in SICK FTMg AIR FLOW SENSOR…5.3
• CVE-2023-2345A vulnerability was found in SourceCodester Service Provider…9.8
• CVE-2023-23450Use of Password Hash Instead of Password for Authentication …9.8
• CVE-2023-23452Missing Authentication for Critical Function in SICK FX0-GPN…9.8
• CVE-2023-23453Missing Authentication for Critical Function in SICK FX0-GEN…9.8
• CVE-2023-23454cbq_classify in net/sched/sch_cbq.c in the Linux kernel thro…5.5
• CVE-2023-23455atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel th…5.5
• CVE-2023-23456A heap-based buffer overflow issue was discovered in UPX in …5.5
• CVE-2023-23457A Segmentation fault was found in UPX in PackLinuxElf64::inv…5.5