Vulnerability · Published Jul 14, 2026 · Assigned by TPLink
CVE-2026-5040Weak Password Hashing Mechanism in TP-Link Deco M5
High 7.1
In plain English
A high-severity security flaw in Deco M5 Deco M5 V1 from TP-Link Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TP-Link Systems Inc. | Deco M5 Deco M5 V1 | 0 – before 1.9.4 Build 20260312 Rel.17129 |
Weakness: CWE-916 · Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N