Overview
An Out-of-Bounds Write vulnerability, identified as CVE-2025-65084, has been discovered in multiple Ashlar-Vellum products, specifically Cobalt, Xenon, Argon, Lithium, and Cobalt Share. The affected versions include 12.6.1204.207 and all prior releases. This vulnerability poses a significant risk as it could allow a malicious actor to potentially disclose sensitive information or, more severely, execute arbitrary code on the affected system. This blog post details the vulnerability, its impact, and recommended mitigation strategies.
Technical Details
The vulnerability stems from an Out-of-Bounds Write error within the affected Ashlar-Vellum products. Out-of-Bounds Write vulnerabilities occur when a program writes data beyond the allocated buffer. In the case of CVE-2025-65084, a specially crafted file or input processed by the application can trigger this condition. The improper handling of memory allocation and data validation during file processing creates an opportunity for attackers to overwrite memory regions beyond the intended boundary. This can lead to application crashes, data corruption, information disclosure, or even the execution of malicious code if the overwritten memory contains executable instructions or critical program data.
CVSS Analysis
As of the publication of this article, the CVSS score for CVE-2025-65084 is currently listed as N/A. This may be due to the ongoing analysis and assessment of the vulnerability’s severity. We strongly recommend monitoring official advisories and updates from Ashlar-Vellum and security organizations like CISA for the final CVSS score and further details on the vulnerability’s exploitability and impact. The lack of a CVSS score *does not* diminish the potential risk this vulnerability poses.
Possible Impact
The impact of exploiting CVE-2025-65084 can be significant:
- Information Disclosure: An attacker could potentially read sensitive data from the application’s memory, including proprietary design information, user credentials, or other confidential data.
- Arbitrary Code Execution: The most severe consequence is the possibility of an attacker executing arbitrary code on the affected system. This could lead to complete system compromise, allowing the attacker to install malware, steal data, or disrupt operations.
- Denial of Service: The vulnerability can potentially cause the application to crash, leading to a denial-of-service condition for legitimate users.
Mitigation and Patch Steps
The primary mitigation step is to update your Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share installations to the latest version as soon as a patch or updated version is made available by Ashlar-Vellum. In the meantime, consider the following:
- Monitor Ashlar-Vellum’s website for updates: Regularly check Ashlar-Vellum’s official website for announcements regarding patches or updated versions that address CVE-2025-65084.
- Implement input validation: Ensure that all files and data processed by Ashlar-Vellum products are rigorously validated to prevent malicious input from triggering the vulnerability.
- Network Segmentation: Isolate systems running Ashlar-Vellum products on a separate network segment to limit the potential impact of a successful exploit.
- Principle of Least Privilege: Run Ashlar-Vellum products with the minimum necessary privileges to reduce the attack surface.
Apply the vendor supplied patch as soon as possible. Please check the vendor’s page for the latest updates.
