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-25-726?
The severity of ZDI-25-726 is high due to the ability of remote attackers to execute arbitrary code on vulnerable systems.
How do I fix ZDI-25-726?
To mitigate ZDI-25-726, users should update to the latest version of Ashlar-Vellum Cobalt that contains the security patch.
What type of attacks can exploit ZDI-25-726?
ZDI-25-726 can be exploited through user interaction, requiring victims to visit a malicious webpage or open a malicious file.
Who is affected by ZDI-25-726?
ZDI-25-726 affects installations of Ashlar-Vellum Cobalt without the latest security updates.
Is user interaction required for exploiting ZDI-25-726?
Yes, user interaction is required to exploit ZDI-25-726, as the target must engage with malicious content.