CVE-2026-109576

MEDIUM

The parser in PEAK-System PCAN driver correctly detected the malformed record, but the loop iterating the record list advanced its processed-bytes counter even when a record had been rejected as invalid.

CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Published: 10/20/2026Modified: 10/22/2026

Related Intelligence (1)

CRITICALPhishing

HMS Networks PEAK-System PCAN Windows drivers

<p><a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-293-01.json"><strong>View CSAF</strong></a></p> <h2>Summary</h2> <p><strong>Successful exploitation of these vulnerabilities could crash the Windows kernel.</strong></p> <p>The following versions of HMS Networks PEAK-System PCAN Windows drivers are affected:</p> <ul> <li>PEAK-System Device Driver Setup <=5.1.

CVE-2026-109576CVE-2026-101103
CISA Advisories

References (4)

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-293-01.jsonhttps://www.cisa.gov/news-events/ics-advisories/icsa-26-293-01https://www.hms-networks.com/cybersecurityhttps://www.peak-system.com/support/downloads/software/