ZDI-25-644: (0Day) Ashlar-Vellum Graphite VC6 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Graphite. 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 VC6 files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated 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 Graphite. 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-2025-7988.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-25-644?
ZDI-25-644 has been assigned a high severity rating due to its potential for remote code execution.
How do I fix ZDI-25-644?
To fix ZDI-25-644, ensure that you update Ashlar-Vellum Graphite to the latest patched version provided by the vendor.
What types of attacks can ZDI-25-644 be exploited by?
ZDI-25-644 can be exploited by remote attackers who can lure a user to visit a malicious page or open a malicious file.
Is user interaction required to exploit ZDI-25-644?
Yes, user interaction is required to exploit ZDI-25-644, as the target must actively engage with malicious content.
What are the potential consequences of ZDI-25-644?
The consequences of ZDI-25-644 exploitation can include arbitrary code execution, leading to system compromise.