CVE-2026-103672

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

HIGH

7.1

CVSS Score

Published: October 20, 2026 at 08:23 PM UTC

Updated: October 30, 2026 at 05:17 PM UTC

2 products affected across 1 vendorPEAK-System Device Driver SetupPCAN Windows CAN device drivers

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Severity

HIGH7.1

Exploit prediction

EPSS 0.1%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

PCAN Windows CAN device drivers · Hms Networks

90%

All versions

Vendor states this is fixed in 5.1.4 (unaffected)

PEAK-System Device Driver Setup · Hms Networks

90%

All versions

Vendor states this is fixed in 5.1.4 (unaffected)

Remediation

No guide yet

No 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/cybersecurity

Source: cverecord

https://www.peak-system.com/support/downloads/software/

Source: cverecord

https://www.cisa.gov/news-events/ics-advisories/icsa-26-293-01

Source: cverecord

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-293-01.json

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHicscert

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusAWAITING ANALYSIS

CWE

CWE-129

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