CVE-2026-42480 Denial of service in n/a
Attackers can cause denial of service in Open CASCADE Technology via a crafted VRML file exploiting a stack-based out-of-bounds read.
- 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-2026-42480?
CVE-2026-42480 is a medium-severity denial of service vulnerability in n/a, published on 1 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A stack-based out-of-bounds read vulnerability in VrmlData_Scene::ReadLine in the VRML parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows attackers to cause a denial of service via a crafted VRML file. The issue occurs because the quoted-string escape handler uses ptr[++anOffset] without proper bounds checking, which can read past the end of a fixed-size stack buffer.
Weakness: CWE-125
Which versions are affected by CVE-2026-42480?
It affects 1 product.
Products include Opencascade Open Cascade Technology.
How do I fix CVE-2026-42480?
No fix has been published for CVE-2026-42480 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-42480 being exploited?
There is no known exploitation of CVE-2026-42480 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2026-42480, GHSA-c7gg-3q89-p762, UBUNTU-CVE-2026-42480.