CVE-2026-103672CWE-129

CVE-2026-103672

High · published October 21, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
2.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CVSS v4.0
6.9 · CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00126 · 2.1th percentile
Weakness
CWE-129 · Improper Validation of Array Index
Published
2026-10-21T01:17Z
References (4)
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-293-01.json · [email protected]https://www.cisa.gov/news-events/ics-advisories/icsa-26-293-01 · [email protected]https://www.hms-networks.com/cybersecurity · [email protected]https://www.peak-system.com/support/downloads/software/ · [email protected]
EPSS history
Timeline
  • 22 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 20 OCT 20:23Z
    HMS Networks PEAK-System PCAN Windows drivers Improper Validation of Array Index
    cvelistv5
  • 20 OCT 20:23Z
    HMS Networks PEAK-System PCAN Windows drivers Improper Validation of Array Index
    cvelistv5