CVE-2026-82783 Hardcoded credentials in Programmable Remote I/O Coupler Unit (Software PLC Type) CPSN-PCB271-S1-041
An attacker with physical access can obtain credentials due to plaintext password storage in CONPROSYS nano Series devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-82783?
CVE-2026-82783 is a medium-severity vulnerability in Contec Co., Ltd. Programmable Remote I/O Coupler Unit (Software PLC Type) CPSN-PCB271-S1-041, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Plaintext storage of a password issue exists in CONPROSYS nano Series . If this vulnerability is exploited, an attacker with physical access to the product may obtain credentials.
Weakness: CWE-256
Which versions are affected by CVE-2026-82783?
How do I fix CVE-2026-82783?
No fix has been published for CVE-2026-82783 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-82783 being exploited?
There is no known exploitation of CVE-2026-82783 in the wild and no public exploit code.
Sources
Also known as GHSA-wwwx-57v8-r5j8.