CVE-2026-3437High· 8.8▾ Twilight

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 Eng…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score48/ 100 · Moderate

impact 48.4 · likelihood 0 · exploitation 0

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Proof of concept

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Published

Mar 3, 2026

Updated

Jun 25, 2026

CVSS

8.8

Vendor

—

Product

—

CWE

CWE-119

Depth score

48 · Moderate

EPSS

0.17% · p6

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS history

Exploit-prediction probability, daily snapshots since Jul 31.

0.2% → 0.2%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 232 days

Mar 3, 2026Published
Disclosed via NVD
Jun 25, 2026Record revised
Last analysed / modified upstream
Jul 31, 2026EPSS first tracked
0.2%
Oct 21, 2026EPSS peak
0.2% → 0.2%

CWE-119 #nvd

Full technical detail▾

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd

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