CVE-2017-6026

A Use of Insufficiently Random Values issue was discovered in Schneider Electric Modicon PLCs Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The session numbers generated by the web application are lacking randomization and are shared between several users. This may allow a current session to be compromised.

• CWE-330
• CWE-330

• http://www.securityfocus.com/bid/97254Third Party Advisory, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02Third Party Advisory, US Government Resource
• https://www.exploit-db.com/exploits/45918/Exploit, Third Party Advisory, VDB Entry
• http://www.securityfocus.com/bid/97254Third Party Advisory, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02Third Party Advisory, US Government Resource
• https://www.exploit-db.com/exploits/45918/Exploit, Third Party Advisory, VDB Entry

Published

Jun 30, 2017

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-2017-6020Leao Consultoria e Desenvolvimento de Sistemas (LCDS) LTDA M…
• CVE-2017-6021In Schneider Electric ClearSCADA 2014 R1 (build 75.5210) and…
• CVE-2017-6022A hard-coded password issue was discovered in Becton, Dickin…
• CVE-2017-6023An issue was discovered in Fatek Automation PLC Ethernet Mod…9.8
• CVE-2017-6024A Resource Exhaustion issue was discovered in Rockwell Autom…5.9
• CVE-2017-6025A Stack Buffer Overflow issue was discovered in 3S-Smart Sof…
• CVE-2017-6027An Arbitrary File Upload issue was discovered in 3S-Smart So…
• CVE-2017-6028An Insufficiently Protected Credentials issue was discovered…9.8
• CVE-2017-6029A Cross-Site Scripting issue was discovered in Certec EDV Gm…
• CVE-2017-6030A predictable value range from previous values issue was dis…6.5
• CVE-2017-6031A Header Injection issue was discovered in Certec EDV GmbH a…
• CVE-2017-6032A Violation of Secure Design Principles issue was discovered…