CVE-2026-42958 Use After Free in Labcenter Proteus
Attackers can execute arbitrary code via crafted files due to a use-after-free flaw in Labcenter Proteus.
- 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-2026-42958?
CVE-2026-42958 is a high-severity use after free 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 a use-after-free vulnerability that can be exploited to cause memory corruption while parsing specially crafted files. This could allow an attacker to execute arbitrary code in the context of the current process.
Weakness: CWE-416
Which versions are affected by CVE-2026-42958?
How do I fix CVE-2026-42958?
No fix has been published for CVE-2026-42958 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-42958 being exploited?
There is no known exploitation of CVE-2026-42958 in the wild and no public exploit code.
Sources
Also known as GHSA-38rj-c63j-q99w.