ZDI-CAN-26053: ZDI-25-721: (0Day) Ashlar-Vellum Cobalt CO File Parsing Memory Corruption 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 proper validation of user-supplied data, which can result in a memory corruption 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-2025-8001.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-26053?
The severity of ZDI-CAN-26053 is high due to its ability to allow remote code execution.
How do I fix ZDI-CAN-26053?
To fix ZDI-CAN-26053, update Ashlar-Vellum Cobalt to the latest version provided by the vendor.
What types of attacks are possible with ZDI-CAN-26053?
ZDI-CAN-26053 allows attackers to execute arbitrary code by tricking users into visiting malicious pages or opening malicious files.
Is user interaction required to exploit ZDI-CAN-26053?
Yes, user interaction is required as the target must visit a malicious page or open a malicious file for the vulnerability to be exploited.
Which software is affected by ZDI-CAN-26053?
ZDI-CAN-26053 affects installations of Ashlar-Vellum Cobalt.