ZDI-CAN-26238: ZDI-25-725: (0Day) Ashlar-Vellum Cobalt XE File Parsing Out-Of-Bounds Read 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 a read past the end of an allocated data structure. 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-2025-8006.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-26238?
ZDI-CAN-26238 is considered a critical vulnerability due to its ability to allow remote code execution.
How do I fix ZDI-CAN-26238?
To mitigate ZDI-CAN-26238, update Ashlar-Vellum Cobalt to the latest version that addresses this vulnerability.
What is the impact of ZDI-CAN-26238?
ZDI-CAN-26238 allows remote attackers to execute arbitrary code, potentially compromising the affected system.
What must a user do to be exploited by ZDI-CAN-26238?
A user must visit a malicious page or open a malicious file for the ZDI-CAN-26238 vulnerability to be exploited.
Which software is affected by ZDI-CAN-26238?
The vulnerability ZDI-CAN-26238 affects installations of Ashlar-Vellum Cobalt.