CVE-2026-3437

critical · 9.3

An improper restriction of operations within the bounds of a memory buffer vulnerability in Portwell Engineering Toolkits version 4.8.2 could allow a local authenticated attacker to read and write to arbitrary memory via the Portwell Engineering Toolkits driver. Successful exploitation of this vulnerability could result in escalation of privileges or cause a denial-of-service condition.

9.3

CVSS

0.2%

EPSS (exploit prob.)

6th

EPSS percentile

2026-03-03

Published

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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

Weaknesses

CWE-119

Affected products

Vendor	Product	Affected versions
portwell	engineering_toolkits	4.8.2

Check a specific version with /api/v1/cve/match.

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-062-04.json
https://software.portwell.tw/security-advisory/PWS-2026-3437.html
https://www.cisa.gov/news-events/ics-advisories/icsa-26-062-04

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-3437