CVE-2025-3659 Improper authentication handling for Digi PortServer TS; Digi One SP, SP IA, IA; Digi One IAP
Unauthenticated attackers can modify configuration settings via crafted HTTP POST requests to Digi serial device web interfaces.
- 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-2025-3659?
CVE-2025-3659 is a critical authentication bypass vulnerability in Digi One IAP, published on 12 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper authentication handling was identified in a set of HTTP POST requests affecting the following product families:
* Digi PortServer TS - prior to and including 82000747_AA, build date 06/17/2022
* Digi One SP/Digi One SP IA/Digi One IA - prior to and including 82000774_Z, build date 10/19/2020
* Digi One IAP – prior to and including 82000770 Z, build date 10/19/2020
A specially crafted POST request to the device’s web interface may allow an unauthenticated attacker to modify configuration settings.
Weakness: CWE-287
Which versions are affected by CVE-2025-3659?
How do I fix CVE-2025-3659?
No fix has been published for CVE-2025-3659 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-2025-3659 being exploited?
There is no known exploitation of CVE-2025-3659 in the wild and no public exploit code.
Sources
Also known as GHSA-r6rh-c775-h225.