Ashlar-Vellum Cobalt Heap-Based Buffer Overflow Vulnerability Leading to Remote Code Execution

Vulnerability

A heap-based buffer overflow vulnerability has been identified in Ashlar-Vellum Cobalt, specifically within the CO file parsing process. This vulnerability allows remote attackers to execute arbitrary code on affected systems. The issue arises from inadequate validation of user-supplied data lengths before they are copied to a heap-based buffer. Exploitation of this vulnerability requires user interaction, as the target must open a malicious file or visit a harmful webpage.

Impact

Exploitation of this vulnerability allows for arbitrary code execution on the affected system, with the executed code running in the context of the current process.

Remediation

Due to the nature of this vulnerability, the primary recommendation is to limit interactions with the product.

Added: Oct 29, 2025, 8:21 PM
Updated: Oct 29, 2025, 8:21 PM

Vulnerability Rating

Custom Algorithm
spread
0.0
impact
10.0
exploitability
4.4
remediation
0.0
relevance
0.9
threat
0.0
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.