Type Vulnerability
HMS Networks PEAK-System PCAN Windows drivers are reported to have vulnerabilities that could crash the Windows kernel.
Palo Alto Networks
HMS Networks PEAK-System PCAN Windows drivers
CVE-2026-109576
What this means
This is rated medium severity (6.8 out of 10). There is no confirmed exploitation of it yet. Ask IT whether PEAK-System PCAN is in your estate.
Full vendor description
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.
Scoring and exploitation
6.8/ 10
CVSS 4.0 base scoreMedium
Exploitable only with local access and a low-privilege account, and no one has to click or open anything. High impact on availability.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Exploitability
Longer bar: easier to attack
Attack vectorLocalAV:L
Attack complexityLowAC:L
Attack requirementsNoneAT:N
Privileges requiredLowPR:L
User interactionNoneUI:N
Impact
Longer bar: more harm
ConfidentialityNoneVC:N
IntegrityNoneVI:N
AvailabilityHighVA:H
- Not reported
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-787
References
4 links from the CVE record, grouped by site.
github.com1 link
cisa.gov1 link
hms-networks.com1 link
peak-system.com1 link