HMS Networks PEAK-System PCAN Windows drivers

Summary

Vulnerabilities 5

• High 7.1
  CVE-2026-103672

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

  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.

  HMS Networks PCAN Windows CAN device drivers PEAK-System Device Driver Setup Windows
  Oct 20, 2026
• Medium 5.5
  CVE-2026-101103

  HMS Networks PEAK-System PCAN Windows drivers Classic Buffer Overflow

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

  HMS Networks PEAK-System Device Driver Setup PCAN Windows CAN device drivers Windows
  Oct 20, 2026
• Medium 5.5
  CVE-2026-105960

  HMS Networks PEAK-System PCAN Windows drivers Improper Handling of Length Parameter Inconsistency

  PEAK-System PCAN contains a vulnerable operation involving a variable-length receive-record copy. The driver uses a requested or queued record count without sufficiently capping the copy to the actual caller-supplied output length.

  HMS Networks PCAN Windows CAN device drivers PEAK-System Device Driver Setup Windows
  Oct 20, 2026
• Medium 5.5
  CVE-2026-109576

  HMS Networks PEAK-System PCAN Windows drivers Out-of-bounds Write

  The parser in PEAK-System PCAN driver correctly detected the malformed record, but the loop iterating the record list advanced its processed-bytes counter even when a record had been rejected as invalid.

  HMS Networks PEAK-System Device Driver Setup PCAN Windows CAN device drivers Windows
  Oct 20, 2026
• Medium 5.5
  CVE-2026-110322

  HMS Networks PEAK-System PCAN Windows drivers Untrusted Pointer Dereference

  The PEAK-System PCAN type 0x4030 processing path fails to validate a selected/returned object pointer before dereferencing fixed fields during post-processing.

  HMS Networks PEAK-System Device Driver Setup PCAN Windows CAN device drivers Windows
  Oct 20, 2026

Revision history

1. 2026-10-20 #1

   Initial Publication

References

• ICSA Advisory ICSA-26-293-01 - Web Version
  https://www.cisa.gov/news-events/ics-advisories/icsa-26-293-01
• Recommended Practices
  https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
• Recommended Practices
  https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
• Recommended Practices
  https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
• Recommended Practices
  https://www.cisa.gov/topics/industrial-control-systems
• Recommended Practices
  https://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf
• Recommended Practices
  https://www.cisa.gov/uscert/ncas/tips/ST04-014
• Recommended Practices
  https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01
• Recommended Practices
  https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
• Recommended Practices
  https://www.cisa.gov/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b
• Recommended Practices
  https://www.cisa.gov/secure-our-world/teach-employees-avoid-phishing
• Recommended Practices
  https://www.cisa.gov/news-events/news/avoiding-social-engineering-and-phishing-attacks