CVE-2025-13406 Scanning for higher HART revision device leads into NULL pointer dereference in live list
An attacker can cause a denial of service in Softing smartLink SW-HT by triggering a NULL pointer dereference during device scanning.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-13406?
CVE-2025-13406 is a medium-severity vulnerability in Softing smartLink SW-HT, published on 17 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
NULL Pointer Dereference vulnerability in Softing Industrial Automation GmbH smartLink SW-HT (Webserver modules) allows HTTP DoS.This issue affects smartLink SW-HT: 1.43.
Weakness: CWE-476
Which versions are affected by CVE-2025-13406?
How do I fix CVE-2025-13406?
No fix has been published for CVE-2025-13406 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-13406 being exploited?
There is no known exploitation of CVE-2025-13406 in the wild and no public exploit code.
Sources
Also known as GHSA-94m9-vhc7-hv4q.