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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.001 (2.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000
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.