ZDI-CAN-25355: ZDI-25-726: (0Day) Ashlar-Vellum Cobalt LI 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 LI 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-2025-7993.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-25355?
ZDI-CAN-25355 has a CVSS score that indicates a high severity level due to remote code execution vulnerabilities.
How do I fix ZDI-CAN-25355?
To fix ZDI-CAN-25355, users should update Ashlar-Vellum Cobalt to the latest version provided by the vendor.
What types of attacks can ZDI-CAN-25355 facilitate?
ZDI-CAN-25355 can facilitate remote code execution attacks if a user interacts with a malicious page or file.
What versions of Ashlar-Vellum Cobalt are affected by ZDI-CAN-25355?
ZDI-CAN-25355 affects all installations of Ashlar-Vellum Cobalt that have not been patched.
Is user interaction required to exploit ZDI-CAN-25355?
Yes, user interaction is required to exploit ZDI-CAN-25355, as the target must visit a malicious page or open a malicious file.