VulnerabilityAnalyzed

CVE-2026-5040

TP-Link Deco M5 v1 uses a weak password hashing mechanism to store user credentials.

HIGH 7.1EPSS 0.09%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.09%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 4.0: 7.1 HIGHCVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.09% probability · 1th percentile
CISA KEV: Not listed
Weakness: CWE-916
Affected: tp-link/deco m5 firmware
Source: f23511db-6c3e-4e32-a477-6aa17d310630

References

https://www.tp-link.com/en/support/download/deco-m5/v1/#FirmwareProduct
https://www.tp-link.com/us/support/download/deco-m5/v1/#FirmwareProduct
https://www.tp-link.com/us/support/faq/5190/Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.