All vulnerabilities
CVE-2026-109576

HMS Networks PEAK-System PCAN Windows drivers Out-of-bounds Write

HMS Networks PEAK-System Device Driver Setup
Open in ThreatlineRecord JSON
CVSS
5.5Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.12%Chance of exploitation activity in the next 30 days, higher than 1% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published20 Oct 2026Updated 20 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Vendor and government advisories 1

Vendors that say their products are affected, and agencies that issued alerts. Check each for the fixed release of the product you run.

Reports 1

1 outlet mention it. Reports are not confirmation; each links to its source.

Description

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.

Text from CVE List

Affected versions 4

  • PEAK-System Device Driver Setupaffected: all versions through 5.1.2.1151CVE List
  • PEAK-System Device Driver Setupunaffected: 5.1.4CVE List
  • PCAN Windows CAN device driversaffected: all versions through 5.1.2CVE List
  • PCAN Windows CAN device driversunaffected: 5.1.4CVE List

References 4