CVE-2026-3437 Improper Restriction of Operations within the Bounds of a Memory Buffer in Portwell Engineering Toolkits
A local authenticated attacker can read and write arbitrary memory via the driver, leading to privilege escalation or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3437?
CVE-2026-3437 is a critical memory corruption vulnerability in Portwell Engineering Toolkits, published on 3 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-119
Which versions are affected by CVE-2026-3437?
It affects 1 product.
Products include Portwell Engineering Toolkits.
How do I fix CVE-2026-3437?
No fix has been published for CVE-2026-3437 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-3437 being exploited?
There is no known exploitation of CVE-2026-3437 in the wild and no public exploit code.
Sources
Also known as GHSA-pf6w-96ch-47hm.