CVE-2025-65087 Out-of-bounds read in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share

High 8.4 Published 12 May 2026 Updated 12 May 2026

Attackers can disclose information or execute arbitrary code via crafted VC6 files in Ashlar-Vellum CAD applications.

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-2025-65087?

CVE-2025-65087 is a high-severity memory corruption vulnerability in Ashlar Cobalt, published on 12 May 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

An Out-of-Bounds Read vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior that could allow an attacker to disclose information or execute arbitrary code when a specially crafted VC6 file is being parsed.

Weakness: CWE-125

Which versions are affected by CVE-2025-65087?

It affects 5 products.

Products include Ashlar Argon, Ashlar Cobalt, Ashlar Cobalt Share, Ashlar Lithium, Ashlar Xenon.

How do I fix CVE-2025-65087?

No fix has been published for CVE-2025-65087 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-2025-65087 being exploited?

There is no known exploitation of CVE-2025-65087 in the wild and no public exploit code.

All Ashlar Cobalt vulnerabilities

Sources

Also known as GHSA-2fv4-66cr-954x.