Vulnerability in TP-Link Deco M5
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.
EPSS: 0.001 (0.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Tp-link Deco_m5 — versions 1.0
- Tp-link Deco_m5_firmware
- Tp-link Systems Inc. Deco M5 V1 — versions 0
Weakness classification (CWE)
References
- f23511db-6c3e-4e32-a477-6aa17d310630 (Product)
- f23511db-6c3e-4e32-a477-6aa17d310630 (Product)
- f23511db-6c3e-4e32-a477-6aa17d310630 (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-5040?
- CVE-2026-5040 is a medium-severity vulnerability in TP-Link Deco M5, classified under Use of Password Hash With Insufficient Computational Effort. CVSS score: 6.7/10. Published 2026-07-14.
- How severe is CVE-2026-5040?
- Medium severity. CVSS v3 base score is 6.7 out of 10.