CVE-2026-42953 Out-of-bounds write in Labcenter Proteus
An out-of-bounds write in Labcenter Proteus allows attackers to execute arbitrary code via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-42953?
CVE-2026-42953 is a high-severity memory corruption vulnerability in Labcenter Proteus, published on 7 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The application contains an out-of-bounds write vulnerability that can be exploited by an attacker to cause the program to write data past the end of an allocated memory buffer. This can lead to arbitrary code execution.
Weakness: CWE-787
Which versions are affected by CVE-2026-42953?
How do I fix CVE-2026-42953?
No fix has been published for CVE-2026-42953 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-2026-42953 being exploited?
There is no known exploitation of CVE-2026-42953 in the wild and no public exploit code.
Sources
Also known as GHSA-r42h-hrr3-8vrv.