Mitsubishi Electric’s MELSEC iQ-F Series Vulnerability: When Your Credentials Are as Secure as a Postcard!
Attention MELSEC iQ-F series users: your CPU modules might be sharing secrets like they’re at a gossip party! With cleartext transmission of sensitive information, attackers could intercept communication and stop programs. The CVSS v4 score is a nerve-wracking 8.7. So, grab that VPN and fortify your LAN for peace of mind!

Hot Take:
In the world of cybersecurity, it seems like Mitsubishi Electric’s MELSEC iQ-F Series CPU modules are having a bit of a “cleartext-tastrophe.” Who knew sensitive information could be such an open book? If only hackers needed a library card to check it out!
Key Points:
- Vulnerability: Cleartext transmission of sensitive information in Mitsubishi Electric’s MELSEC iQ-F Series CPU modules.
- Risk: Attackers can intercept communication and obtain credentials to manipulate or halt device operations.
- Scope: Affects a wide range of MELSEC iQ-F Series models, compromising critical manufacturing infrastructure globally.
- Mitigation: Utilize VPNs, restrict LAN access, and keep devices off the internet to minimize risk.
- Future Outlook: No fixed version planned; users advised to adopt recommended defensive measures.
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