ZDI-25-122: (0Day) Ashlar-Vellum Cobalt LI File Parsing Integer Overflow 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 proper validation of user-supplied data, which can result in an integer overflow before allocating a 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-2025-2023.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-25-122?
The severity of ZDI-25-122 is high due to its capability for remote code execution.
How do I fix ZDI-25-122?
To fix ZDI-25-122, update Ashlar-Vellum Cobalt to the latest version that includes the security patch.
What type of attack does ZDI-25-122 enable?
ZDI-25-122 enables remote attackers to execute arbitrary code on affected installations.
Is user interaction required to exploit ZDI-25-122?
Yes, user interaction is required as the target must visit a malicious page or open a malicious file.
Which software is affected by ZDI-25-122?
ZDI-25-122 affects installations of Ashlar-Vellum Cobalt.