CVE-2025-5555

A vulnerability has been found in Nixdorf Wincor PORT IO Driver up to 1.0.0.1. This affects the function sub_11100 in the library wnport.sys of the component IOCTL Handler. Such manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. Upgrading to version 3.0.0.1 is able to mitigate this issue. Upgrading the affected component is recommended. The vendor was contacted beforehand and was able to provide a patch very early.

CVSS v3 7.8 HIGH
CVSS v2.0 6.8 MEDIUM

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 3.1 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://b.iakb.org/2025/06/26/Wincor-Nixdorf-PORT-IO-Driver-Buffer-Overflow/
https://download.dieboldnixdorf.com/
https://vuldb.com/?ctiid.329013
https://vuldb.com/?id.329013
https://vuldb.com/?submit.604823

Configurations

No configuration.

History

18 Oct 2025, 08:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-10-18 08:15

Updated : 2025-10-21 19:31

NVD link : CVE-2025-5555

Mitre link : CVE-2025-5555

CVE.ORG link : CVE-2025-5555

JSON object : View

Products Affected

No product.

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-121

Stack-based Buffer Overflow

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