ZDI-25-119: (0Day) Ashlar-Vellum Cobalt VS File Parsing Out-Of-Bounds Read 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 read past the end of an allocated buffer. 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-2025-2012.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-25-119?
The severity of ZDI-25-119 is determined to be high as it allows remote attackers to execute arbitrary code.
How do I fix ZDI-25-119?
To fix ZDI-25-119, update Ashlar-Vellum Cobalt to the latest version that addresses this vulnerability.
What types of attacks are possible with ZDI-25-119?
ZDI-25-119 can be exploited by remote attackers to execute arbitrary code on the affected installations.
Is user interaction required for exploiting ZDI-25-119?
Yes, user interaction is required because the target must visit a malicious page or open a malicious file.
Which software is affected by ZDI-25-119?
ZDI-25-119 affects Ashlar-Vellum Cobalt installations.