CVE-2026-5040: TP-Link Deco m5 Firmware

Medium severity, CVSS 6.7. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• TP-Link Deco m5 Firmware: before 1.9.4 (fixed in 1.9.4)

Published 2026-07-14. Last modified 2026-08-06.