CVE-2025-64319 is a vulnerability classified under CWE-732 (Incorrect Permission Assignment for Critical Resource) affecting Salesforce's Mulesoft Anypoint Code Builder versions before 1.12.1. The flaw arises because critical configuration files within the Code Builder environment are assigned overly permissive write permissions, allowing an attacker to manipulate these files without requiring authentication or user interaction. This vulnerability can be exploited remotely (AV:N) with low attack complexity (AC:L), and no privileges are needed (PR:N). The primary impact is on the integrity of the system, as an attacker could alter configuration files that control the behavior of the Mulesoft integration and deployment pipelines. Such unauthorized changes could lead to misconfigurations, potentially enabling further attacks or disrupting integration workflows. The vulnerability does not directly compromise confidentiality or availability. Although no exploits have been reported in the wild, the medium CVSS score of 5.3 reflects the moderate risk posed by this issue. The vulnerability is particularly relevant for organizations relying on Mulesoft Anypoint Code Builder for their API development and integration tasks, as improper configuration manipulation can have cascading effects on connected systems and services. The vendor has released version 1.12.1 to address this issue, but no direct patch links are provided in the data. Organizations should verify their version and apply updates accordingly.

For European organizations, this vulnerability poses a moderate risk primarily to the integrity of their integration and API management workflows. Manipulation of writable configuration files could lead to unauthorized changes in deployment settings, potentially causing misrouted data flows, introduction of malicious payloads, or disruption of business-critical integrations. This can affect sectors heavily reliant on digital transformation and API ecosystems, such as finance, telecommunications, and manufacturing. While confidentiality and availability are not directly impacted, integrity compromises can lead to indirect data breaches or service interruptions if attackers leverage altered configurations to escalate privileges or inject malicious code. The lack of authentication requirement increases the attack surface, especially for organizations exposing Mulesoft services to the internet. Given Salesforce's strong presence in Europe, especially in countries with large enterprise IT sectors, the threat could affect a wide range of industries. However, the absence of known exploits in the wild suggests that immediate risk is moderate, but proactive mitigation is essential to prevent potential exploitation.

1. Immediately upgrade Mulesoft Anypoint Code Builder to version 1.12.1 or later, as recommended by Salesforce. 2. Implement strict file system permissions to restrict write access to configuration files only to authorized administrators and processes. 3. Employ configuration file integrity monitoring tools to detect unauthorized changes in real-time. 4. Use network segmentation and firewall rules to limit exposure of Mulesoft services to trusted networks and users only. 5. Conduct regular audits of user permissions and access controls within the Mulesoft environment to ensure least privilege principles are enforced. 6. Integrate logging and alerting mechanisms for configuration changes to enable rapid incident response. 7. Educate development and operations teams about the risks of improper permission assignments and secure configuration management practices. 8. Review and harden CI/CD pipelines that interact with Mulesoft configurations to prevent injection of malicious configurations. These steps go beyond generic patching by focusing on operational security hygiene and proactive detection.