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CVE-2026-103672high7.1

HMS Networks PEAK-System PCAN Windows drivers Improper Validation of Array Index

Impact

The PEAK-System PCAN parser indexes a length table using attacker-controlled DLC without enforcing DLC <= 0x0f, then copies attacker payload from record+0x1c into a fixed-size stack destination.

Source excerpt · icscert

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 parser indexes a length table using attacker-controlled DLC without enforcing DLC <= 0x0f, then copies attacker payload from record+0x1c into a fixed-size stack destination.

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-2026-103672

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-129 ↗

CWE-129

icscert

Related →
Contributing organizations · 2
icscert

Assigning organization

2026-10-20
CISA-ADP

Additional data publisher

2026-10-30

What changed

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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