Nixdorf Wincor · Nixdorf Wincor Port Io Driver · CVE-2025-5555
**Name of the Vulnerable Software and Affected Versions**
Nixdorf Wincor PORT IO Driver versions up to 1.0.0.1
**Description**
A flaw exists in the IOCTL Handler component of Nixdorf Wincor PORT IO Driver, specifically within the `sub 11100` function in the `wnport.sys` library. This issue leads to a stack-based buffer overflow, requiring local access for exploitation. The exploit details have been publicly disclosed.
**Recommendations**
Upgrade to version 3.0.0.1 to resolve the issue.