CVE-2026-5040 Weak Password Hashing Mechanism in TP-Link Deco M5
Weak password hashing in TP-Link Deco M5 allows attackers with privileged access to recover credentials via brute-force, leading to unauthorized device management access.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5040?
CVE-2026-5040 is a high-severity vulnerability in TP-Link Systems Inc. Deco M5 Deco M5 V1, published on 14 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-916
Which versions are affected by CVE-2026-5040?
It affects 1 product.
Products include Tp-Link Deco M5 Firmware.
How do I fix CVE-2026-5040?
No fix has been published for CVE-2026-5040 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-5040 being exploited?
There is no known exploitation of CVE-2026-5040 in the wild and no public exploit code.
Sources
Also known as GHSA-6vqq-hcvj-cx94.