High severity · published Mar 3, 2026
CVE-2026-3437
Improper Restriction of Operations within the Bounds of a Memory Buffer in Portwell Engineering Toolkits
7.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PE
Portwell Engineering Toolkits · Portwell
through 4.8.2 · source: vendor
ET
In the news
VulnerabilityHigh
Portwell Engineering Toolkits
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 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. View CVE Details Affected Products Portwell Engineering Toolkits Vendor: Portwell Product Version: Portwell Portwell Engineering Toolkits: 4.8.2 Product Status: known_affected Remediations Vendor fix Portwell has not responded to requests to work with CISA to mitigate this vulnerability. Users of affected versions of Portwell Engineering Toolkits are invited to contact ...
Mar 3, 2026·CISA Advisories