CVE-2026-101103: medium-severity vulnerability in HMS Networks PCAN Windows CAN device drivers
HMS Networks PEAK-System PCAN Windows drivers Classic Buffer Overflow
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.8epss 0.1%
The PEAK-System PCAN diagnostic call did not validate that the caller-supplied output buffer was large enough to hold the output record.
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
Affected products
HMS Networks · PCAN Windows CAN device driversHMS Networks · PEAK-System Device Driver SetupRelated CVEs — HMS Networks PCAN Windows CAN device drivers
In the same product, most dangerous first.
CVE-2026-103672MEDIUMHMS Networks PEAK-System PCAN Windows drivers Improper Validation of Array IndexEPSS 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%