CVE-2026-103672mediumCWE-129

CVE-2026-103672: medium-severity vulnerability in HMS Networks PCAN Windows CAN device drivers

HMS Networks PEAK-System PCAN Windows drivers Improper Validation of Array Index

Published · Updated

Follow this CVE+ Monitor PCAN Windows CAN device drivers+ Monitor PEAK-System Device Driver Setup

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.9epss 0.1%
The PEAK-System PCAN parser indexes a length table using attacker-controlled DLC without enforcing DLC <= 0x0f, then copies attacker payload from record+0x1c into a fixed-size stack destination.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
HMS Networks · PCAN Windows CAN device driversHMS Networks · PEAK-System Device Driver Setup
Related CVEs — HMS Networks PCAN Windows CAN device drivers

In the same product, most dangerous first.

CVE-2026-101103MEDIUMHMS Networks PEAK-System PCAN Windows drivers Classic Buffer OverflowEPSS 0.1%CVE-2026-109576MEDIUMHMS Networks PEAK-System PCAN Windows drivers Out-of-bounds WriteEPSS 0.1%CVE-2026-105960MEDIUMHMS Networks PEAK-System PCAN Windows drivers Improper Handling of Length Parameter InconsistencyEPSS 0.1%CVE-2026-110322MEDIUMHMS Networks PEAK-System PCAN Windows drivers Untrusted Pointer DereferenceEPSS 0.1%