CVE-2026-101103
HMS Networks PEAK-System PCAN Windows drivers Classic Buffer Overflow
MEDIUM
5.5
CVSS Score
Published: October 20, 2026 at 08:19 PM UTC
Updated: October 22, 2026 at 05:36 PM UTC
2 products affected across 1 vendorPCAN Windows CAN device driversPEAK-System Device Driver Setup
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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%
Description
The PEAK-System PCAN diagnostic call did not validate that the caller-supplied output buffer was large enough to hold the output record.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
All versions
Vendor states this is fixed in 5.1.4 (unaffected)
All versions
Vendor states this is fixed in 5.1.4 (unaffected)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (4)
Source: cverecord
https://www.hms-networks.com/cybersecuritySource: cverecord
https://www.peak-system.com/support/downloads/software/Source: cverecord
https://www.cisa.gov/news-events/ics-advisories/icsa-26-293-01CVSS
5.5MEDIUMicscert
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusAWAITING ANALYSIS
CWE
CWE-120
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