CVE-2025-46269: Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share Heap-based Buffer Overflow

Published Aug 18, 2025
·
Updated

In Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions prior to 12.6.1204.204, the affected applications lack proper validation of user-supplied data when parsing VC6 files. This could lead to a heap-based buffer overflow. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.

Affected Software

10 affected componentsFixes available
: Ashlar-Vellum Cobalt<12.6.1204.204
12.6.1204.204
: Ashlar-Vellum Xenon<12.6.1204.204
12.6.1204.204
: Ashlar-Vellum Argon<12.6.1204.204
12.6.1204.204
: Ashlar-Vellum Lithium<12.6.1204.204
12.6.1204.204
: Ashlar-Vellum Cobalt Share<12.6.1204.204
12.6.1204.204
Ashlar Argon<12.2.1204.204
Ashlar Cobalt<12.2.1204.204
Ashlar Cobalt Share<12.2.1204.204
Ashlar Lithium<12.2.1204.204
Ashlar Xenon<12.2.1204.204

Remediation

Information

Ashlar-Vellum recommends users update to Versions 12.6.1204.204 and above https://download.ashlar.com/v12/index.html  of the affected products. * Ashlar-Vellum strongly recommends that all users update Cobalt, Xenon, Argon, Lithium, and Cobalt Share to the latest supported version by selecting Help > Check Web for Updates from the application's main menu. * Users should only open CO/XE/AR/LI files or import supported file formats from trusted sources.

Event History

Aug 18, 2025
CVE Published
via MITRE·09:11 PM
Data Sourced
via MITRE·09:11 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via ICS·09:11 PM
SeverityWeaknessAffected Software
Data Sourced
via NVD·10:15 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2025-46269?

CVE-2025-46269 is classified as a high-severity vulnerability due to its potential to cause a heap-based buffer overflow.

2

How do I fix CVE-2025-46269?

To mitigate CVE-2025-46269, update your Ashlar-Vellum software to version 12.6.1204.204 or later.

3

What applications are affected by CVE-2025-46269?

CVE-2025-46269 affects Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions prior to 12.6.1204.204.

4

What can an attacker do with CVE-2025-46269?

An attacker could exploit CVE-2025-46269 to execute arbitrary code through a heap-based buffer overflow.

5

Is there a workaround for CVE-2025-46269 if I cannot update immediately?

There are no official workarounds for CVE-2025-46269; updating to the latest version is recommended for protection.

Company

Resources

Contact

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