ZDI-CAN-26049: ZDI-25-713: (0Day) Ashlar-Vellum Cobalt AR 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 AR 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-2025-7999.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-26049?
ZDI-CAN-26049 has been classified with a CVSS score indicating a critical severity level due to its potential for remote code execution.
How do I fix ZDI-CAN-26049?
To address ZDI-CAN-26049, users should update Ashlar-Vellum Cobalt to the latest version provided by the vendor.
What is the impact of ZDI-CAN-26049?
The impact of ZDI-CAN-26049 is that it allows remote attackers to execute arbitrary code on affected installations.
Is user interaction required to exploit ZDI-CAN-26049?
Yes, user interaction is required as the target must visit a malicious page or open a malicious file to exploit ZDI-CAN-26049.
Which software is affected by ZDI-CAN-26049?
ZDI-CAN-26049 affects installations of Ashlar-Vellum Cobalt.