Phoenix Contact FL Switch Series: Vulnerabilities Unplugged! 🚨
The Phoenix Contact FL Switch series is experiencing a vulnerability party, and everyone’s invited! From weak passwords to cross-site scripting, these switches have more holes than Swiss cheese. Hackers with a penchant for mischief have ample opportunities, so update your firmware before your network turns into a comedy of errors.

Hot Take:
Looks like Phoenix Contact’s FL Switch series has more holes than Swiss cheese, and CyberDanube Security Research just handed out a platter of vulnerabilities that would make even the most seasoned hackers drool. Who knew switching could be so scandalous?
Key Points:
- Multiple vulnerabilities discovered in Phoenix Contact’s FL Switch series by CyberDanube Security Research.
- Vulnerabilities include weak passwords, denial-of-service attacks, and cross-site scripting exploits.
- Vulnerabilities have been assigned CVE numbers ranging from CVE-2025-41692 to CVE-2025-41752.
- These vulnerabilities were found during a penetration test in cooperation with Verbund OT Cyber Security Lab.
- Update to firmware version 3.50 or newer is recommended to fix these issues.
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