CVE-2025-63362 Auth bypass in n/a

Critical 9.8 Published 4 Dec 2025 Updated 8 Dec 2025

Attackers can bypass authentication by setting administrator credentials to blank values on Waveshare serial-to-ethernet gateways.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-63362?

CVE-2025-63362 is a critical authentication bypass vulnerability in n/a, published on 4 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Waveshare RS232/485 TO WIFI ETH (B) Serial to Ethernet/Wi-Fi Gateway Firmware V3.1.1.0: HW 4.3.2.1: Webpage V7.04T.07.002880.0301 allows attackers to set the Administrator password and username as blank values, allowing attackers to bypass authentication.

Weakness: CWE-620

Which versions are affected by CVE-2025-63362?

It affects 1 product.

Products include Waveshare Rs232\/485 to Wifi Eth \(B\) Firmware.

How do I fix CVE-2025-63362?

No fix has been published for CVE-2025-63362 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-63362 being exploited?

There is no known exploitation of CVE-2025-63362 in the wild and no public exploit code.

Sources

Also known as GHSA-8j63-78xq-x2q3.