CVE-2025-62775

HIGH

Published Oct 22, 2025 Modified Apr 15, 2026 CWE-669

Description

Mercku M6a devices through 2.1.0 allow root TELNET logins via the web admin password.

CVSS v3.1 Score

8.0

HIGH

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-669 CWE-669

References

Other References

https://blog.nullvoid.me/posts/mercku-exploits/ https://seclists.org/fulldisclosure/2025/Oct/10

Frequently Asked Questions

What is CVE-2025-62775? +

Mercku M6a devices through 2.1.0 allow root TELNET logins via the web admin password. It has a CVSS v3.1 base score of 8.0 (HIGH).

How severe is CVE-2025-62775? +

CVE-2025-62775 has a CVSS v3.1 score of 8.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2025-62775? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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