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Medium 5.5Published Oct 20, 2026
CVE-2026-101103HMS Networks PEAK-System PCAN Windows drivers Classic Buffer Overflow
Updated under an hour ago ()
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It affects HMS Networks PEAK-System Device Driver Setup and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The PEAK-System PCAN diagnostic call did not validate that the caller-supplied output buffer was large enough to hold the output record.
- CVSS
- 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-120
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- icscert
- NVD analysis
- Received
- Record last updated
- Oct 20, 2026
- First seen by InfoSec Signals
- Oct 20, 2026
Affected products
HMS Networks PEAK-System Device Driver Setup hms_networks:peak_system_device_driver_setup (from the name) | through 5.1.2.1151; 5.1.4 not affected | CNA record |
HMS Networks PCAN Windows CAN device drivers hms_networks:pcan_windows_can_device_drivers (from the name) | through 5.1.2; 5.1.4 not affected | CNA record |
References
- https://www.hms-networks.com/cybersecurity
- https://www.peak-system.com/support/downloads/software/
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-293-01
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-293-01.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.