CVE-2026-3437
CWE-119Published: March 3, 2026· Updated: Mar 5, 2026
Official Description
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.
Technical Analysis
CVE-2026-3437 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.
From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
News & Research Mentioning CVE-2026-3437
View CSAF Summary Successful exploitation of this vulnerability could allow a local attacker to escalate privileges or cause a denial-of-service condition. The following versions of Portwell Engineering Toolkits are affected: Portwell Engineering Toolkits 4.8.2 CVSS Vendor Equipment Vulnerabilities v3 8.8 Portwell Portwell Engineering Toolkits Improper Restriction of Operations within the Bounds of a Memory Buffer Background Critical Infrastructure Sectors: Critical Manufacturing, Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: Taiwan Vulnerabilities Expand All + CVE-2026-3437 An Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Portwell Engineering Toolkits version 4.8.2 could allow a [xlite_meta score:79 src:CISA Alerts xlite_fp:51bd8b4b9c3f476487fa2f1041fa075156509e8d637c88eabd172bf637786b61]
All References (1)
Quick Facts
Known Threat Actors
Related CVEs (CWE-119)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-3437 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts