Vulnerability · Published Oct 20, 2026 · Assigned by icscert
CVE-2026-109576HMS Networks PEAK-System PCAN Windows drivers Out-of-bounds Write
Medium 5.5
In plain English
A medium-severity out-of-bounds write 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)5.5Medium
Exploit odds (30 days)0.1%top 98.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
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-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H