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CVE-2026-101103medium6.8

HMS Networks PEAK-System PCAN Windows drivers Classic Buffer Overflow

Impact

HMS Networks PEAK-System PCAN Windows drivers have a buffer overflow weakness due to insufficient validation of the caller-supplied output buffer. The issue affects versions up to 5.1.2.1151. The impact is unspecified.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

What to do

HMS Networks AB has addressed the issue in version 5.1.4 and recommends that users upgrade to the newest available version. Users can find software updates for PEAK-System PCAN on the software download page https://www.peak-system.com/support/downloads/software/ .

For more information see the associated HMS security advisory https://www.hms-networks.com/cybersecurity .

icscert guidance

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

HMS Networks · icscert

PEAK-System Device Driver Setup

2 ranges
icscert version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → through 5.1.2.1151

custom versions

unaffected

5.1.4

unknown

Other versions: unaffected

HMS Networks · icscert

PCAN Windows CAN device drivers

2 ranges
icscert version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → through 5.1.2

custom versions

unaffected

5.1.4

unknown

Other versions: unaffected

Original source description

The PEAK-System PCAN diagnostic call did not validate that the caller-supplied output buffer was large enough to hold the output record.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-101103

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-120 ↗

CWE-120

icscert

Related →
Contributing organizations · 2
icscert

Assigning organization

2026-10-20
CISA-ADP

Additional data publisher

2026-10-29

What changed

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Large field values are marked as truncated previews. Original source snapshots remain retained.

References

4 sources
www.hms-networks.com/cybersecurity
Security advisoryicscert
www.peak-system.com/support/downloads/software/
Source referenceicscert
www.cisa.gov/news-events/ics-advisories/icsa-26-293-01
Security advisoryicscert
github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-293-01.json
Source referenceicscert