ZDI-25-126: (0Day) Ashlar-Vellum Cobalt VS File Parsing Type Confusion 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 VS files. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. 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-2025-2022.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-25-126?
ZDI-25-126 has a high severity rating due to its potential for remote code execution.
How can I fix ZDI-25-126?
To fix ZDI-25-126, update to the latest version of Ashlar-Vellum Cobalt as recommended by the vendor.
What types of attacks can exploit ZDI-25-126?
ZDI-25-126 can be exploited through a malicious page or file that requires user interaction.
Who is affected by ZDI-25-126?
Users of Ashlar-Vellum Cobalt are affected by ZDI-25-126.
What are the potential consequences of ZDI-25-126?
The potential consequences of ZDI-25-126 include unauthorized remote code execution on affected systems.