CVE-2026-5040

HIGH CVSS 4.0: 7.1 EPSS 0.09%
Updated Aug 06, 2026
Tp-Link Systems Inc.
Parameter Value
CVSS 7.1 (HIGH)
Affected Versions before 1.9.4
Fixed In 1.9.4
Type CWE-916
Vendor Tp-Link Systems Inc.
Public PoC No

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.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
High
Difficult to exploit
Attack Requirements
None
No additional conditions
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Tp-Link Deco_M5_Firmware
cpe:2.3:o:tp-link:deco_m5_firmware:*:*:*:*:*:*:*:*
1.9.4
Tp-Link Deco_M5
cpe:2.3:h:tp-link:deco_m5:1.0:*:*:*:*:*:*:*