CVE-2026-3437: An improper restriction of operations within the bounds of a memory buffer vulnerability in Portwell Engineeri

Routine

HIGH 8.8DOWNGRADE

CVE-2026-3437 is a high-severity flaw (CVSS 8.8) affecting engineering toolkits. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Weakness	CWE-119
Published	2026-03-03
Last modified	2026-06-25

Publisher (CNA): ICS-CERT · Vendor: portwell

Last updated 2026-06-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-03 18:16 UTCPublished CVE record published
2026-06-25 16:16 UTCUpdated Record last modified

portwell engineering toolkits DOWNGRADE

Affected: 4.8.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.8.2

1. Check installed version

apt-cache policy engineering-toolkits || rpm -q engineering-toolkits || engineering-toolkits --version

2. No fixed release: DOWNGRADE to a release before 4.8.2 (Debian / Ubuntu)

apt-cache madison engineering-toolkits sudo apt install engineering-toolkits=<VERSION_BEFORE_4.8.2> sudo apt-mark hold engineering-toolkits

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list engineering-toolkits sudo dnf downgrade engineering-toolkits-<VERSION_BEFORE_4.8.2> sudo dnf versionlock add engineering-toolkits

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-3437?

engineering toolkits: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-3437 being exploited?

CVE-2026-3437 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-3437 affect?

CVE-2026-3437 affects engineering toolkits. Severity is high (CVSS 8.8). 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 Engine

How urgent is CVE-2026-3437?

Priority 32/100. High severity

References

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