ZDI-25-120: (0Day) Ashlar-Vellum Cobalt CO File Parsing Use-After-Free Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of CO files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2025-2013.
— ZDI
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch ZDI-25-120
Event History
Frequently Asked Questions
What is the severity of ZDI-25-120?
The severity of ZDI-25-120 is indicated by its potential to allow remote code execution.
How do I fix ZDI-25-120?
To fix ZDI-25-120, users should update to the latest version of Ashlar-Vellum Cobalt that addresses this vulnerability.
What are the symptoms of ZDI-25-120 exploitation?
Symptoms of ZDI-25-120 exploitation may include unexpected software behavior, crashes, or unauthorized access.
Who is affected by ZDI-25-120?
Users of Ashlar-Vellum Cobalt are affected by ZDI-25-120.
Is user interaction required for ZDI-25-120?
Yes, user interaction is required for ZDI-25-120, as the target must visit a malicious page or open a malicious file.