CVE-2026-109576

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

State: Published
Severity: 6.8 Medium
Published: Oct 20, 2026
Updated: Oct 29, 2026
Reserved: Oct 15, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.8 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	icscert
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	icscert

Weaknesses

CWE-787

Affected Products

Product	Versions
PEAK-System Device Driver SetupHMS Networks	5.1.2.1151 and earlierAffected 5.1.4Not affected
PCAN Windows CAN device driversHMS Networks	5.1.2 and earlierAffected 5.1.4Not affected

References

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