CVE-2026-5040

Description

TP-Link Deco M5 v1 uses a weak password hashing mechanism to store user credentials. An attacker who obtains the password hash through system compromise or privileged access could perform brute-force or dictionary attacks. Successful exploitation may result in disclosure of authentication credentials, enabling unauthorized access to device management functions, depending on the privileges associated with the recovered password. The primary security impact is loss of confidentiality.

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Weakness Type (CWE)

CWE-916 CWE-916

References

Other References

https://www.tp-link.com/en/support/download/deco-m5/v1/#Firmware https://www.tp-link.com/us/support/download/deco-m5/v1/#Firmware https://www.tp-link.com/us/support/faq/5190/

Frequently Asked Questions

What is CVE-2026-5040? +

TP-Link Deco M5 v1 uses a weak password hashing mechanism to store user credentials. An attacker who obtains the password hash through system compromise or privileged access could perform brute-force or dictionary attacks. Successful exploitation may result in disclosure of authentication credentials, enabling unauthorized access to device management functions, depending on the privileges associated with the recovered password. The primary security impact is loss of confidentiality.

How do I check if I'm vulnerable to CVE-2026-5040? +

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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