What is CVE-2026-103672?

CVE-2026-103672 is a high-severity vulnerability, classified under Improper Validation of Array Index. CVSS score: 7.1/10. Published 2026-10-20.

How severe is CVE-2026-103672?

High severity. CVSS v3 base score is 7.1 out of 10.

CVE-2026-103672

CVE-2026-103672

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.

Published 2026-10-20.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

References

www.hms-networks.com/cybersecurity
www.peak-system.com/support/downloads/software/
www.cisa.gov/news-events/ics-advisories/icsa-26-293-01
github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-293-01.js…

Frequently asked questions

What is CVE-2026-103672?: CVE-2026-103672 is a high-severity vulnerability, classified under Improper Validation of Array Index. CVSS score: 7.1/10. Published 2026-10-20.
How severe is CVE-2026-103672?: High severity. CVSS v3 base score is 7.1 out of 10.