ZDI-25-125: (0Day) Ashlar-Vellum Cobalt XE 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 XE files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. 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-2025-2021.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-25-125?
The severity of ZDI-25-125 is classified as high due to the potential for remote code execution.
How do I fix ZDI-25-125?
To fix ZDI-25-125, you should apply the latest security patch provided by Ashlar-Vellum for Cobalt.
What types of attacks can be performed using ZDI-25-125?
ZDI-25-125 allows remote attackers to execute arbitrary code via a malicious page or file.
Is user interaction required to exploit ZDI-25-125?
Yes, user interaction is required as the target must visit a malicious page or open a malicious file.
Which software is affected by ZDI-25-125?
ZDI-25-125 affects installations of Ashlar-Vellum Cobalt.