CVE-2025-56803 is a command injection vulnerability identified in Figma Desktop for Windows, specifically version 125.6.5. The vulnerability arises from the way the local plugin loader processes the 'build' field in a plugin's manifest.json file. This field is passed directly to the Node.js child_process.exec function without proper validation or sanitization, enabling an attacker to execute arbitrary operating system commands. This can lead to remote code execution (RCE) on the affected system. However, the supplier disputes the severity of this vulnerability, arguing that exploitation requires a local user to craft and load a malicious plugin, effectively limiting the attack to self-inflicted compromise. Additionally, the local build procedure necessary for exploitation does not run for plugins shared via the Figma Community, reducing the risk from remote or third-party plugins. The vulnerability is classified under CWE-78 (Improper Neutralization of Special Elements used in an OS Command), and has a CVSS v3.1 base score of 8.4, indicating high severity. The attack vector is local (AV:L), with low attack complexity (AC:L), no privileges required (PR:N), and no user interaction needed (UI:N). The impact on confidentiality, integrity, and availability is high, as arbitrary commands can be executed with the privileges of the user running Figma Desktop. No known exploits are currently in the wild, and no patches have been linked yet. This vulnerability primarily affects local users who have the ability to load or develop plugins on their Figma Desktop client on Windows systems.

For European organizations, the primary impact of CVE-2025-56803 lies in the potential for local privilege escalation and arbitrary code execution on Windows endpoints running Figma Desktop. While the attack requires local access and the ability to load or develop malicious plugins, insider threats or compromised endpoints could exploit this vulnerability to execute malicious payloads, steal sensitive design files, or move laterally within the network. Given Figma's widespread use in design and collaborative workflows, compromise could lead to intellectual property theft, disruption of design processes, or deployment of malware. The lack of remote exploitation capability limits the threat surface, but organizations with developers or designers who frequently use local plugins are at higher risk. Additionally, since the vulnerability affects the Windows version, organizations with significant Windows workstation deployments are more exposed. The absence of known exploits in the wild reduces immediate risk but does not eliminate the potential for targeted attacks or future exploit development.

To mitigate CVE-2025-56803, European organizations should implement the following specific measures: 1) Restrict the ability to load or develop local plugins in Figma Desktop to trusted users only, employing role-based access controls and endpoint security policies. 2) Educate users, especially designers and developers, about the risks of loading untrusted or self-developed plugins and enforce strict plugin usage policies. 3) Monitor and audit plugin manifests and local plugin directories for unauthorized or suspicious modifications. 4) Employ application whitelisting and endpoint detection and response (EDR) tools to detect and prevent execution of unauthorized commands or scripts spawned by Figma processes. 5) Maintain up-to-date backups of design assets to mitigate potential data loss. 6) Coordinate with Figma for timely patching once official fixes are released, and apply updates promptly. 7) Consider isolating design workstations or using virtualized environments to limit the impact of potential local exploits. These steps go beyond generic advice by focusing on controlling plugin usage, monitoring local plugin activity, and leveraging endpoint security controls tailored to the nature of this vulnerability.