Vulnerability · Published Oct 20, 2026 · Assigned by icscert
CVE-2026-103672HMS Networks PEAK-System PCAN Windows drivers Improper Validation of Array Index
High 7.1
In plain English
A high-severity security flaw in PCAN Windows CAN device drivers from HMS Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.1%top 97.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HMS Networks | PEAK-System Device Driver Setup | 0 – through 5.1.2.1151 |
| HMS Networks | PCAN Windows CAN device drivers | 0 – through 5.1.2 |
Weakness: CWE-129 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H